河南PCB設(shè)計(jì)廠東莞市仁遠(yuǎn)電子科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="PCB設(shè)計(jì)有一些步驟，PCB設(shè)計(jì)步驟以下：1：明確PCB設(shè)計(jì)總體目標(biāo)，例如手稿，元器件的材料;2：電路原理圖封裝提前準(zhǔn)備，杜蘭特有的能夠立即用，沒(méi)有的立即繪圖圖型，有自身的庫(kù)文件，能夠再運(yùn)用;3：電路原理圖繪圖，將所需元器件都放置好，聯(lián)線;"><meta name="keywords" content="河南PCB設(shè)計(jì)廠,PCB設(shè)計(jì)"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu id="qgqbi"></menu><blockquote id="qgqbi"></blockquote><track id="qgqbi"><label id="qgqbi"></label></track><tbody id="qgqbi"></tbody><legend id="qgqbi"></legend><th id="qgqbi"><button id="qgqbi"></button></th><listing id="qgqbi"><rt id="qgqbi"></rt></listing><sup id="qgqbi"><dd id="qgqbi"><tbody id="qgqbi"></tbody></dd></sup><menu id="qgqbi"><xmp id="qgqbi"></xmp></menu><fieldset id="qgqbi"><acronym id="qgqbi"></acronym></fieldset><wbr id="qgqbi"><mark id="qgqbi"><strong id="qgqbi"></strong></mark></wbr><tbody id="qgqbi"><small id="qgqbi"></small></tbody><label id="qgqbi"><tfoot id="qgqbi"></tfoot></label><div id="qgqbi"><th id="qgqbi"><object id="qgqbi"></object></th></div><listing id="qgqbi"></listing><source id="qgqbi"><ins id="qgqbi"></ins></source><noframes id="qgqbi"></noframes><noscript id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"></tt></strike></noscript><strike id="qgqbi"><rp id="qgqbi"></rp></strike><dl id="qgqbi"></dl><th id="qgqbi"></th><acronym id="qgqbi"></acronym><center id="qgqbi"><input id="qgqbi"><div id="qgqbi"><th id="qgqbi"></th></div></input></center><label id="qgqbi"></label><tr id="qgqbi"><label id="qgqbi"><center id="qgqbi"></center></label></tr><menuitem id="qgqbi"><em id="qgqbi"><legend id="qgqbi"></legend></em></menuitem><pre id="qgqbi"></pre><fieldset id="qgqbi"><address id="qgqbi"><abbr id="qgqbi"><dl id="qgqbi"></dl></abbr></address></fieldset><sup id="qgqbi"><form id="qgqbi"></form></sup><form id="qgqbi"></form> <form id="qgqbi"></form><center id="qgqbi"><rp id="qgqbi"></rp></center><code id="qgqbi"></code><option id="qgqbi"><i id="qgqbi"><tr id="qgqbi"></tr></i></option><address id="qgqbi"></address><pre id="qgqbi"></pre><wbr id="qgqbi"></wbr><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"></bdo></delect></dl><table id="qgqbi"><p id="qgqbi"></p></table><label id="qgqbi"><xmp id="qgqbi"><noscript id="qgqbi"><dl id="qgqbi"></dl></noscript></xmp></label><cite id="qgqbi"></cite><acronym id="qgqbi"><object id="qgqbi"><big id="qgqbi"></big></object></acronym><rp id="qgqbi"></rp><tt id="qgqbi"></tt><output id="qgqbi"></output><table id="qgqbi"><p id="qgqbi"><ruby id="qgqbi"></ruby></p></table><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><u id="qgqbi"></u><bdo id="qgqbi"><tr id="qgqbi"><dfn id="qgqbi"></dfn></tr></bdo><strike id="qgqbi"><font id="qgqbi"></font></strike><s id="qgqbi"></s><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"><pre id="qgqbi"></pre></code></samp></acronym><cite id="qgqbi"></cite><form id="qgqbi"><dl id="qgqbi"><pre id="qgqbi"><label id="qgqbi"></label></pre></dl></form><center id="qgqbi"><rp id="qgqbi"></rp></center><font id="qgqbi"></font><menu id="qgqbi"></menu><small id="qgqbi"><strong id="qgqbi"><sup id="qgqbi"><form id="qgqbi"></form></sup></strong></small><label id="qgqbi"><tfoot id="qgqbi"><em id="qgqbi"></em></tfoot></label><optgroup id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></optgroup><label id="qgqbi"></label><meter id="qgqbi"><noframes id="qgqbi"><i id="qgqbi"><ins id="qgqbi"></ins></i></noframes></meter><kbd id="qgqbi"></kbd><b id="qgqbi"></b><dl id="qgqbi"><delect id="qgqbi"><th id="qgqbi"><span id="qgqbi"></span></th></delect></dl><font id="qgqbi"></font><small id="qgqbi"></small><mark id="qgqbi"></mark><del id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></del><dd id="qgqbi"><ruby id="qgqbi"><menu id="qgqbi"></menu></ruby></dd><th id="qgqbi"><em id="qgqbi"></em></th><abbr id="qgqbi"></abbr><span id="qgqbi"><kbd id="qgqbi"><dfn id="qgqbi"><sub id="qgqbi"></sub></dfn></kbd></span><ins id="qgqbi"></ins><s id="qgqbi"><progress id="qgqbi"></progress></s><th id="qgqbi"></th><bdo id="qgqbi"></bdo><blockquote id="qgqbi"></blockquote><b id="qgqbi"></b><nav id="qgqbi"><div id="qgqbi"></div></nav> <meter id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></meter><tfoot id="qgqbi"></tfoot><big id="qgqbi"><pre id="qgqbi"><s id="qgqbi"></s></pre></big><small id="qgqbi"></small><table id="qgqbi"><td id="qgqbi"><sup id="qgqbi"></sup></td></table><form id="qgqbi"><tr id="qgqbi"></tr></form><tr id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></tr><ul id="qgqbi"></ul><center id="qgqbi"><optgroup id="qgqbi"><div id="qgqbi"></div></optgroup></center><rp id="qgqbi"><input id="qgqbi"><blockquote id="qgqbi"><th id="qgqbi"></th></blockquote></input></rp><tbody id="qgqbi"></tbody><form id="qgqbi"><u id="qgqbi"><fieldset id="qgqbi"></fieldset></u></form><rp id="qgqbi"></rp><b id="qgqbi"><small id="qgqbi"></small></b><dd id="qgqbi"></dd><kbd id="qgqbi"></kbd><code id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"></ul></pre></code><strong id="qgqbi"></strong><cite id="qgqbi"><sub id="qgqbi"></sub></cite><object id="qgqbi"></object><dfn id="qgqbi"></dfn><pre id="qgqbi"></pre><xmp id="qgqbi"></xmp><pre id="qgqbi"></pre><sup id="qgqbi"><form id="qgqbi"><cite id="qgqbi"></cite></form></sup><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><input id="qgqbi"></input><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"></code></samp></acronym><nobr id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"><strong id="qgqbi"></strong></ul></pre></nobr><menuitem id="qgqbi"><em id="qgqbi"><wbr id="qgqbi"><mark id="qgqbi"></mark></wbr></em></menuitem><dl id="qgqbi"></dl><rp id="qgqbi"><input id="qgqbi"><div id="qgqbi"></div></input></rp><div id="qgqbi"><button id="qgqbi"><pre id="qgqbi"><meter id="qgqbi"></meter></pre></button></div><address id="qgqbi"></address><thead id="qgqbi"><abbr id="qgqbi"><sup id="qgqbi"></sup></abbr></thead><em id="qgqbi"></em><ul id="qgqbi"><listing id="qgqbi"><wbr id="qgqbi"></wbr></listing></ul><listing id="qgqbi"></listing><wbr id="qgqbi"></wbr><thead id="qgqbi"><abbr id="qgqbi"><strike id="qgqbi"></strike></abbr></thead><menuitem id="qgqbi"></menuitem><pre id="qgqbi"></pre><pre id="qgqbi"></pre><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"><span id="qgqbi"></span></bdo></delect></dl><ruby id="qgqbi"></ruby><pre id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"><i id="qgqbi"></i></tt></strike></pre><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset><cite id="qgqbi"><sub id="qgqbi"></sub></cite><optgroup id="qgqbi"></optgroup><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset></div><div id="ewzpz" class="pl_css_ganrao" style="display: none;"><em id="ewzpz"><ruby id="ewzpz"></ruby></em><font id="ewzpz"><s id="ewzpz"></s></font><dd id="ewzpz"></dd><pre id="ewzpz"><mark id="ewzpz"><legend id="ewzpz"></legend></mark></pre><pre id="ewzpz"><meter id="ewzpz"></meter></pre><ul id="ewzpz"><font id="ewzpz"><pre id="ewzpz"><dl id="ewzpz"></dl></pre></font></ul><noframes id="ewzpz"></noframes><thead id="ewzpz"></thead><thead id="ewzpz"><abbr id="ewzpz"><strike id="ewzpz"><font id="ewzpz"></font></strike></abbr></thead><dfn id="ewzpz"></dfn><pre id="ewzpz"></pre><rp id="ewzpz"></rp><track id="ewzpz"></track><strike id="ewzpz"><rp id="ewzpz"></rp></strike><s id="ewzpz"></s><strong id="ewzpz"></strong><ul id="ewzpz"><listing id="ewzpz"></listing></ul><sup id="ewzpz"><font id="ewzpz"><tbody id="ewzpz"></tbody></font></sup><em id="ewzpz"></em><optgroup id="ewzpz"><fieldset id="ewzpz"><acronym id="ewzpz"><strong id="ewzpz"></strong></acronym></fieldset></optgroup><tt id="ewzpz"><tbody id="ewzpz"><acronym id="ewzpz"><abbr id="ewzpz"></abbr></acronym></tbody></tt><i id="ewzpz"><ins id="ewzpz"><abbr id="ewzpz"></abbr></ins></i><em id="ewzpz"></em><div id="ewzpz"><th id="ewzpz"><acronym id="ewzpz"><del id="ewzpz"></del></acronym></th></div><em id="ewzpz"><style id="ewzpz"><mark id="ewzpz"><noframes id="ewzpz"></noframes></mark></style></em><input id="ewzpz"></input><ins id="ewzpz"><label id="ewzpz"><center id="ewzpz"></center></label></ins><track id="ewzpz"></track><s id="ewzpz"></s><tr id="ewzpz"><fieldset id="ewzpz"><thead id="ewzpz"><strong id="ewzpz"></strong></thead></fieldset></tr><output id="ewzpz"></output><delect id="ewzpz"></delect><menuitem id="ewzpz"><abbr id="ewzpz"></abbr></menuitem><em id="ewzpz"><small id="ewzpz"><dl id="ewzpz"><small id="ewzpz"></small></dl></small></em><legend id="ewzpz"></legend><th id="ewzpz"><th id="ewzpz"></th></th><div id="ewzpz"><bdo id="ewzpz"></bdo></div><sup id="ewzpz"></sup><u id="ewzpz"><thead id="ewzpz"><address id="ewzpz"><strong id="ewzpz"></strong></address></thead></u><output id="ewzpz"><strong id="ewzpz"><dd id="ewzpz"><ruby id="ewzpz"></ruby></dd></strong></output><pre id="ewzpz"></pre><ul id="ewzpz"><strong id="ewzpz"></strong></ul><abbr id="ewzpz"></abbr><thead id="ewzpz"></thead><s id="ewzpz"></s><thead id="ewzpz"><abbr id="ewzpz"><sup id="ewzpz"><font id="ewzpz"></font></sup></abbr></thead><th id="ewzpz"><span id="ewzpz"><del id="ewzpz"></del></span></th><var id="ewzpz"></var><dl id="ewzpz"></dl><dl id="ewzpz"></dl></div><header class="header container"><span id="uthp8hc" class="logo"><a href="http://www.cdcfah.com/"><img src="/static/new_net_01/images/logo.png" alt="找產(chǎn)品網(wǎng)"></a></span><span id="bagy0tl" class="tigs"> 發(fā)信息做推廣就找產(chǎn)品網(wǎng)<br />企業(yè)電商信息綜合服務(wù)平臺(tái) </span><div id="c2tuiie" class="searchbox"><div id="qmtvxeq" class="searchLt"><div id="xqi8tqc" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="3itjg2s" class="clearfix searchWrap"><div id="cgt8tqx" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="j78xe9c" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁(yè)</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="rfcr7x4" class="twoCol"><div id="kdvnp9e" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/second-_dzyqj/">電子元器件</a>?<a href="http://www.cdcfah.com/cp/third-dzyqj_pcbdlb/">PCB電路板</a>?河南PCB設(shè)計(jì)廠東莞市仁遠(yuǎn)電子科技供應(yīng)</p><div id="3zzwdct" class="leftbox clearfix"><h1>河南PCB設(shè)計(jì)廠東莞市仁遠(yuǎn)電子科技供應(yīng)</h1><div id="j3amtdk" class="proBig"><div id="zjgd33h" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419669003906/6621050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="crgmj9y" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419669003906/6621050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xmjlshy" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河南PCB設(shè)計(jì)廠,PCB設(shè)計(jì)</p><p><span>***更新：</span>2021-01-31 06:18:43</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mwtlnrj" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">東莞市仁遠(yuǎn)電子科技有限公司</a></p><p><span>聯(lián)系人：</span>陳海濤</p><p><span>郵箱: </span>haitao_chen@dgrenyuan.com</p><p><span>電話: </span>13802373717</p><p><span>傳真: </span>0769_</p><p><span>網(wǎng)址: </span>http://www.dgrenyuan.com</p><p><span>手機(jī): </span>0769-85626128</p><p><span>地址: </span>長(zhǎng)安鎮(zhèn)烏沙社區(qū)環(huán)東路228號(hào)企匯服務(wù)中心五樓501</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="7jbypwd" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8t3o7fu" class="box"><p><p>PCB設(shè)計(jì)有一些步驟，PCB設(shè)計(jì)步驟以下：1：明確PCB設(shè)計(jì)總體目標(biāo)，例如手稿，元器件的材料;2：電路原理圖封裝提前準(zhǔn)備，杜蘭特有的能夠立即用，沒(méi)有的立即繪圖圖型，有自身的庫(kù)文件，能夠再運(yùn)用;3：電路原理圖繪圖，將所需元器件都放置好，聯(lián)線;4：電路原理圖查驗(yàn)，這一很重要，例如是否有連錯(cuò)，型號(hào)調(diào)節(jié)，封裝制訂這些，一些手機(jī)軟件有DRC作用;5：之上準(zhǔn)確無(wú)誤則能夠開(kāi)展下一步;6：PCB封裝提前準(zhǔn)備，這一步有可能在第二步情況下另外開(kāi)展;7：廂式壓濾機(jī)提前準(zhǔn)備，將元器件從電路原理圖或互聯(lián)網(wǎng)表中導(dǎo)到pcb軟件里邊，并設(shè)定設(shè)計(jì)方案標(biāo)準(zhǔn);8：合理布局，好的合理布局很重要，河南PCB設(shè)計(jì)廠，河南PCB設(shè)計(jì)廠，隨后走線;9：敷銅，查驗(yàn);10：生產(chǎn)制造文本文檔提前準(zhǔn)備，如元器件目錄，貼片圖，gerber等。上邊便是PCB設(shè)計(jì)的**步驟，無(wú)論是哪些的PCB，都是會(huì)遵循之上的有關(guān)步驟。別往下看了,你要找的PCB設(shè)計(jì)就在這里!快速出樣，河南PCB設(shè)計(jì)廠，價(jià)格優(yōu)惠，千萬(wàn)別錯(cuò)過(guò)！河南PCB設(shè)計(jì)廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南PCB設(shè)計(jì)廠,PCB設(shè)計(jì)" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419669003906/6621050.png"></div><p> 隨著電子科技不斷發(fā)展，PCB技術(shù)也隨之發(fā)生了巨大的變化，制造工藝也需要進(jìn)步。同時(shí)每個(gè)行業(yè)對(duì)PCB線路板的工藝要求也逐漸的提高了，就比如手機(jī)和電腦的電路板里，使用了金也使用了銅，導(dǎo)致電路板的優(yōu)劣也逐漸變得更容易分辨?，F(xiàn)在仁遠(yuǎn)就帶大家了解PCB板的表面工藝，對(duì)比一下不同的PCB板表面處理工藝的優(yōu)缺點(diǎn)和適用場(chǎng)景。單純的從外表看，電路板的外層主要有三種顏色：金色、銀色、淺紅色。按照價(jià)格歸類：金色較貴，銀色次之，淺紅色的低價(jià)，從顏色上其實(shí)很容易判斷出硬件廠家是否存在偷工減料的行為。不過(guò)電路板內(nèi)部的線路主要是純銅，也就是裸銅板。優(yōu)缺點(diǎn)很明顯：優(yōu)點(diǎn)：成本低、表面平整，焊接性良好(在沒(méi)有被氧化的情況下)。缺點(diǎn)：容易受到酸及濕度影響，不能久放，拆封后需在2小時(shí)內(nèi)用完，因?yàn)殂~暴露在空氣中容易氧化;無(wú)法使用于雙面板，因?yàn)榻?jīng)過(guò)前列次回流焊后第二面就已經(jīng)氧化了。如果有測(cè)試點(diǎn)，必須加印錫膏以防止氧化，否則后續(xù)將無(wú)法與探針接觸良好。純銅如果暴露在空氣中很容易被氧化，外層必須要有上述保護(hù)層。而且有些人認(rèn)為金黃色的是銅，那是不對(duì)的想法，因?yàn)槟鞘倾~上面的保護(hù)層。所以就需要在電路板上大面積鍍金，也就是我之前帶大家了解過(guò)的沉金工藝。湖北安防PCB設(shè)計(jì)公司***線路板、 pcb設(shè)計(jì)，專業(yè)生產(chǎn)，快速出樣，這里的價(jià)格更實(shí)惠！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南PCB設(shè)計(jì)廠,PCB設(shè)計(jì)" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420229423828/5674939.png"></div><p>隨著集成電路輸出開(kāi)關(guān)速度提高以及PCB板密度增加，信號(hào)完整性(SignalIntegrity)已經(jīng)成為高速數(shù)字PCB設(shè)計(jì)必須關(guān)心的問(wèn)題之一，元器件和PCB板的參數(shù)、元器件在PCB板上的布局、高速信號(hào)線的布線等因素，都會(huì)引起信號(hào)完整性的問(wèn)題。對(duì)于PCB布局來(lái)說(shuō)，信號(hào)完整性需要提供不影響信號(hào)時(shí)序或電壓的電路板布局，而對(duì)電路布線來(lái)說(shuō)，信號(hào)完整性則要求提供端接元件、布局策略和布線信息。PCB上信號(hào)速度高、端接元件的布局不正確或高速信號(hào)的錯(cuò)誤布線都會(huì)引起信號(hào)完整性問(wèn)題，從而可能使系統(tǒng)輸出不正確的數(shù)據(jù)、電路工作不正常甚至完全不工作，如何在PCB板的設(shè)計(jì)過(guò)程中充分考慮信號(hào)完整性的因素，并采取有效的控制措施，已經(jīng)成為當(dāng)今PCB設(shè)計(jì)業(yè)界中的一個(gè)熱門(mén)話題。良好的信號(hào)完整性，是指信號(hào)在需要的時(shí)候能以正確的時(shí)序和電壓電平數(shù)值做出響應(yīng)。反之，當(dāng)信號(hào)不能正常響應(yīng)時(shí)，就出現(xiàn)了信號(hào)完整性問(wèn)題。信號(hào)完整性問(wèn)題能導(dǎo)致或直接帶來(lái)信號(hào)失真、定時(shí)錯(cuò)誤、不正確數(shù)據(jù)、地址和控制線以及系統(tǒng)誤工作，甚至系統(tǒng)崩潰，信號(hào)完整性問(wèn)題不是某單一因素導(dǎo)致的，而是板級(jí)設(shè)計(jì)中多種因素共同引起的。IC的開(kāi)關(guān)速度，端接元件的布局不正確或高速信號(hào)的錯(cuò)誤布線都會(huì)引起信號(hào)完整性問(wèn)題。</p><p>走線間距離間隔必須是單一走線寬度的3倍或兩個(gè)走線間的距離間隔必須大于單一走線寬度的2倍)。更有效的做法是在導(dǎo)線間用地線隔離。(4)在相鄰的信號(hào)線間插入一根地線也可以有效減小容性串?dāng)_，這根地線需要每1/4波長(zhǎng)就接入地層。(5)感性耦合較難壓制，要盡量降低回路數(shù)量，減小回路面積，信號(hào)回路避免共用同一段導(dǎo)線。(6)相鄰兩層的信號(hào)層走線應(yīng)垂直，盡量避免平行走線，減少層間的串?dāng)_。(7)表層只有一個(gè)參考層面，表層布線的耦合比中間層要強(qiáng)，因此，對(duì)串?dāng)_比較敏感的信號(hào)盡量布在內(nèi)層。(8)通過(guò)端接，使傳輸線的遠(yuǎn)端和近端、終端阻抗與傳輸線匹配，可較高減少串?dāng)_和反射干擾。反射分析當(dāng)信號(hào)在傳輸線上傳播時(shí)，只要遇到了阻抗變化，就會(huì)發(fā)生反射，解決反射問(wèn)題的主要方法是進(jìn)行終端阻抗匹配。典型的傳輸線端接策略在高速數(shù)字系統(tǒng)中，傳輸線上阻抗不匹配會(huì)引起信號(hào)反射，減少和消除反射的方法是根據(jù)傳輸線的特性阻抗在其發(fā)送端或接收端進(jìn)行終端阻抗匹配，從而使源反射系數(shù)或負(fù)載反射系數(shù)為O。傳輸線的長(zhǎng)度符合下列的條件應(yīng)使用端接技術(shù)：L>tr/2tpd。式中，L為傳輸線長(zhǎng)；tr為源端信號(hào)上升時(shí)間；tpd為傳輸線上每單位長(zhǎng)度的負(fù)載傳輸延遲。同樣是PCB設(shè)計(jì)、開(kāi)發(fā)，居然差別這么大，快速打樣,精選材質(zhì)！別選錯(cuò)了！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南PCB設(shè)計(jì)廠,PCB設(shè)計(jì)" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420277314453/6315771.png"></div><p>能夠讓測(cè)試用的探針觸碰到這種小一點(diǎn)，而無(wú)需直接接觸到這些被測(cè)量的電子零件。初期在電路板上面還全是傳統(tǒng)式軟件（DIP）的時(shí)代，確實(shí)會(huì)拿零件的焊孔來(lái)作為測(cè)試點(diǎn)來(lái)用，由于傳統(tǒng)式零件的焊孔夠健壯，不害怕針刺，但是常常會(huì)出現(xiàn)探針接觸不良現(xiàn)象的錯(cuò)判情況產(chǎn)生，由于一般的電子零件歷經(jīng)波峰焊機(jī)（wavesoldering）或者SMT吃錫以后，在其焊錫絲的表層一般都是會(huì)產(chǎn)生一層助焊膏助焊劑的殘余塑料薄膜，這層塑料薄膜的特性阻抗十分高，經(jīng)常會(huì)導(dǎo)致探針的接觸不良現(xiàn)象，因此那時(shí)候常常由此可見(jiàn)生產(chǎn)線的測(cè)試操作工，常常拿著氣體噴漆拼了命的吹，或者拿酒精擦拭這種必須測(cè)試的地區(qū)。實(shí)際上歷經(jīng)波峰焊機(jī)的測(cè)試點(diǎn)也會(huì)出現(xiàn)探針接觸不良現(xiàn)象的難題。之后SMT風(fēng)靡以后，測(cè)試錯(cuò)判的情況就獲得了非常大的改進(jìn)，測(cè)試點(diǎn)的運(yùn)用也被較高的地授予重?fù)?dān)，由于SMT的零件一般很敏感，沒(méi)法承擔(dān)測(cè)試探針的立即接觸壓力，應(yīng)用測(cè)試點(diǎn)就可以無(wú)需讓探針直接接觸到零件以及焊孔，不僅維護(hù)零件不受傷，也間接性較高的地提高測(cè)試的靠譜度，由于錯(cuò)判的情況越來(lái)越少了。但是伴隨著高新科技的演變，線路板的規(guī)格也愈來(lái)愈小，小小的地電路板上面光源要擠下這么多的電子零件都早已一些費(fèi)勁了。PCB設(shè)計(jì)24小時(shí)快速出樣，專注于線路板生產(chǎn)與批發(fā)！很多老板都不知道！河南PCB設(shè)計(jì)廠</p><p style="text-indent:25px">專業(yè)PCB設(shè)計(jì)開(kāi)發(fā)生產(chǎn)各種電路板，與多家名企合作，歡迎咨詢！河南PCB設(shè)計(jì)廠</p><p>Gerber文件被送至PCB加工廠，并被鍵入到輔助設(shè)計(jì)生產(chǎn)制造CAM對(duì)系統(tǒng)設(shè)計(jì)方案信息開(kāi)展變換，為PCB生產(chǎn)制造的每一道生產(chǎn)流程給出的數(shù)據(jù)。遞交PCB生產(chǎn)要素給板廠，較安全性的方法是自身導(dǎo)出來(lái)Gerber文件，自主在CAM軟件里檢驗(yàn)準(zhǔn)確無(wú)誤后再將Gerber文件和制版工藝規(guī)定遞交給板廠。OK，有一個(gè)誤會(huì)，大家通常覺(jué)得所遞交的PCB印刷制版文件將被板廠用來(lái)立即生產(chǎn)制造，Gerber文件將立即用以光繪機(jī);Excellon打孔文件將直接進(jìn)入鉆機(jī);而且IPC-D-356A網(wǎng)表將立即驅(qū)動(dòng)器鐳射激光檢測(cè)。其實(shí)不是，板廠壓根不容易立即應(yīng)用你的Geber文件或打孔文件開(kāi)展生產(chǎn)制造，較立即的緣故是PCB開(kāi)展拼板方式生產(chǎn)制造，板廠為了更好地減少制造成本，一般的做法是把主板拼出大板生產(chǎn)加工，在生產(chǎn)制造全過(guò)程的較終一道工藝流程再將他們割開(kāi)。因此板廠通常會(huì)將好幾個(gè)顧客出示的PCB材料拼在一個(gè)大的規(guī)范控制面板上生產(chǎn)制造，便于靈活運(yùn)用板才，減少制造成本。一般板廠對(duì)接受到的制版工藝文件會(huì)做一些早期解決，將制版工藝文件導(dǎo)到CAM軟件中，分辨涂層信息是不是詳細(xì)，是不是帶有不正確，確定堆疊構(gòu)造和各層立即是不是兩端對(duì)齊。另外對(duì)制版工藝文件開(kāi)展賠償和調(diào)整，比如打孔賠償，圖形界限線距賠償?shù)?。河南PCB設(shè)計(jì)廠</p><p style="text-indent:25px">東莞市仁遠(yuǎn)電子科技有限公司總部位于長(zhǎng)安鎮(zhèn)烏沙社區(qū)環(huán)東路228號(hào)企匯服務(wù)中心五樓501，是一家電子產(chǎn)品軟硬件開(kāi)發(fā)，PCB Layout PCB 24小時(shí)快速打樣，中小批量PCB生產(chǎn)（FR-1 22F CEM-1 FR-4 銅基鋁基 FPC Tg280材料及高頻板）中小批量，樣品SMT快速代工代料服務(wù) 。的公司。仁遠(yuǎn)電子科技擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供電子產(chǎn)品研發(fā)，PCB 設(shè)計(jì)，中小批量PCB生銷售，SMT代工代料。仁遠(yuǎn)電子科技不斷開(kāi)拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。仁遠(yuǎn)電子科技始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使仁遠(yuǎn)電子科技在行業(yè)的從容而自信。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3091212.html</p></div></div></div></div></div><div id="zt72qi3" class="page-right twoColRt"><div id="ycwolih" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hwnpryk" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="n7nhe7w" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)</p></a></div><div id="vkmtlxz" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/2083415.html"><div><img src="https://tyunfile.71360.com/UploadFile/WZAJZNKJ/637332852248037109/2461316.png" alt="200l桶自動(dòng)灌裝機(jī)生產(chǎn)廠歡迎來(lái)電溫州奧基智能科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>200l桶自動(dòng)灌裝機(jī)生產(chǎn)廠歡迎來(lái)電溫州奧基智能科技供應(yīng)</p></a></div><div id="wgd8kr7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/1387.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/8/3/11/637004297269091023_cyjqc_1306937.jpg" alt="烏魯木齊市會(huì)務(wù)租車網(wǎng) 車永捷供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>烏魯木齊市會(huì)務(wù)租車網(wǎng) 車永捷供應(yīng)</p></a></div><div id="a8uwtvs" class="clear"></div></div><div id="rg2y4r9" class="box01 box03"><h3><a href="http://www.cdcfah.com/xw/">***產(chǎn)品資訊</a></h3><ul></ul></div></div></section><div id="9tdu2lf" class="page-proshow02"><p class="title">本企業(yè)其它產(chǎn)品 <span style="float:right;"><a >更多>></a></span></p><div id="bvc2hjl" class="box box-add clearfix"><ul class="box-list"><li><a href="http://www.cdcfah.com/cp/1421053.html"><div id="jdfc2y9" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419714423828/4756355.png" alt="甘肅高精密多層PCB設(shè)計(jì)報(bào)價(jià) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>甘肅高精密多層PCB設(shè)計(jì)報(bào)價(jià) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421054.html"><div id="qe8od2j" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419680332031/5364728.png" alt="貴州線路板設(shè)計(jì)PCB設(shè)計(jì)加工東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>貴州線路板設(shè)計(jì)PCB設(shè)計(jì)加工東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421159.html"><div id="jyvcoqx" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419688105469/6155398.png" alt="甘肅線路板帖片PCB設(shè)計(jì)報(bào)價(jià) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>甘肅線路板帖片PCB設(shè)計(jì)報(bào)價(jià) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421160.html"><div id="kpwyamj" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419688105469/6155398.png" alt="上海中小批量PCB設(shè)計(jì)生產(chǎn) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>上海中小批量PCB設(shè)計(jì)生產(chǎn) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421161.html"><div id="odvxpby" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366417229892578/321962.png" alt="浙江高精密多層PCB設(shè)計(jì)哪家好東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>浙江高精密多層PCB設(shè)計(jì)哪家好東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421207.html"><div id="8a73bnf" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419696464844/9858260.png" alt="甘肅中小批量PCB設(shè)計(jì)廠家推薦東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>甘肅中小批量PCB設(shè)計(jì)廠家推薦東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421246.html"><div id="w33rgxu" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419840156250/3089247.png" alt="吉林線路板設(shè)計(jì)PCB設(shè)計(jì)哪家好東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>吉林線路板設(shè)計(jì)PCB設(shè)計(jì)哪家好東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421257.html"><div id="kpmegnu" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419696464844/9858260.png" alt="廣東電子產(chǎn)品PCB設(shè)計(jì) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>廣東電子產(chǎn)品PCB設(shè)計(jì) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li></ul></div></div><div id="v2v8zbt" class="page-proshow02"><p class="title">同類產(chǎn)品推薦 <span><a href="http://www.cdcfah.com/cp/first-_dzyqj/">更多>></a></span></p><div id="pz2jlsz" class="box box-add clearfix"><ul class="box-list"><li><a href="http://www.cdcfah.com/cp/3198483.html"><div id="ix8d82h" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637389624688883164/7284130.png" alt="湖北小批量電子產(chǎn)品方案開(kāi)發(fā)制板東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>湖北小批量電子產(chǎn)品方案開(kāi)發(fā)制板東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/3198482.html"><div id="uzb3rdf" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637389624070934385/8283111.png" alt="湖北消費(fèi)電子PCB出樣東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>湖北消費(fèi)電子PCB出樣東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/672487.html"><div id="7dsjb83" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/rzwz888/637303275539931641/6093006.png" alt="河北電子DIP插件廠深圳市潤(rùn)澤五洲電子供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>河北電子DIP插件廠深圳市潤(rùn)澤五洲電子供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/3110716.html"><div id="xmegd8b" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366472434355469/7517933.png" alt="湖南貼片SMT加工公司東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>湖南貼片SMT加工公司東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/681895.html"><div id="qaxpbip" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/rzwz888/637303275517968750/5186076.png" alt="北京電路板DIP插件生產(chǎn)商深圳市潤(rùn)澤五洲電子供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>北京電路板DIP插件生產(chǎn)商深圳市潤(rùn)澤五洲電子供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/3118339.html"><div id="8lnkcov" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420229423828/5674939.png" alt="天津PCB設(shè)計(jì) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>天津PCB設(shè)計(jì) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1421160.html"><div id="dnfcev8" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419688105469/6155398.png" alt="上海中小批量PCB設(shè)計(jì)生產(chǎn) 東莞市仁遠(yuǎn)電子科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>上海中小批量PCB設(shè)計(jì)生產(chǎn) 東莞市仁遠(yuǎn)電子科技供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1363173.html"><div id="3byv8dx" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/rzwz888/637303275340781250/3901037.png" alt="廣東電路板DIP插件電容深圳市潤(rùn)澤五洲電子供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>廣東電路板DIP插件電容深圳市潤(rùn)澤五洲電子供應(yīng)</p></a></li></ul></div></div></section></section><footer class="footer"><div id="jykr7zd" class="container"><p><a href="http://www.cdcfah.com/">首頁(yè)</a> | <a >企業(yè)名錄</a> | <a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a> | <a href="http://www.cdcfah.com/zx/">新聞資訊</a> | <a href="http://www.cdcfah.com/xw/">行業(yè)資訊</a> | <a href="http://www.cdcfah.com/zh/">展會(huì)信息</a> | <a href="http://www.cdcfah.com/sitemap.html">網(wǎng)站地圖</a> | </p><p><p><p>b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰??<a target="_blank">?<span style="white-space:normal;text-indent:24px;"><a target="_blank"><span style="font-family:" font-size:13.3333px;text-align:center;white-space:pre-wrap;caret-color:#1e6fff;background-color:#ffffff;"="">滬ICP備18002634號(hào)-32</span></a> </span><br /></a>??<span>??</span></p></p><p style="text-align:center;white-space:normal;"> <br /> </p> <p style="white-space:normal;text-align:center;"> <a target="_blank"></a> </p></p></div></footer> <footer> <a href="http://www.cdcfah.com/" title="六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu id="qgqbi"></menu><blockquote id="qgqbi"></blockquote><track id="qgqbi"><label id="qgqbi"></label></track><tbody id="qgqbi"></tbody><legend id="qgqbi"></legend><th id="qgqbi"><button id="qgqbi"></button></th><listing id="qgqbi"><rt id="qgqbi"></rt></listing><sup id="qgqbi"><dd id="qgqbi"><tbody id="qgqbi"></tbody></dd></sup><menu id="qgqbi"><xmp id="qgqbi"></xmp></menu><fieldset id="qgqbi"><acronym id="qgqbi"></acronym></fieldset><wbr id="qgqbi"><mark id="qgqbi"><strong id="qgqbi"></strong></mark></wbr><tbody id="qgqbi"><small id="qgqbi"></small></tbody><label id="qgqbi"><tfoot id="qgqbi"></tfoot></label><div id="qgqbi"><th id="qgqbi"><object id="qgqbi"></object></th></div><listing id="qgqbi"></listing><source id="qgqbi"><ins id="qgqbi"></ins></source><noframes id="qgqbi"></noframes><noscript id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"></tt></strike></noscript><strike id="qgqbi"><rp id="qgqbi"></rp></strike><dl id="qgqbi"></dl><th id="qgqbi"></th><acronym id="qgqbi"></acronym><center id="qgqbi"><input id="qgqbi"><div id="qgqbi"><th id="qgqbi"></th></div></input></center><label id="qgqbi"></label><tr id="qgqbi"><label id="qgqbi"><center id="qgqbi"></center></label></tr><menuitem id="qgqbi"><em id="qgqbi"><legend id="qgqbi"></legend></em></menuitem><pre id="qgqbi"></pre><fieldset id="qgqbi"><address id="qgqbi"><abbr id="qgqbi"><dl id="qgqbi"></dl></abbr></address></fieldset><sup id="qgqbi"><form id="qgqbi"></form></sup><form id="qgqbi"></form> <form id="qgqbi"></form><center id="qgqbi"><rp id="qgqbi"></rp></center><code id="qgqbi"></code><option id="qgqbi"><i id="qgqbi"><tr id="qgqbi"></tr></i></option><address id="qgqbi"></address><pre id="qgqbi"></pre><wbr id="qgqbi"></wbr><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"></bdo></delect></dl><table id="qgqbi"><p id="qgqbi"></p></table><label id="qgqbi"><xmp id="qgqbi"><noscript id="qgqbi"><dl id="qgqbi"></dl></noscript></xmp></label><cite id="qgqbi"></cite><acronym id="qgqbi"><object id="qgqbi"><big id="qgqbi"></big></object></acronym><rp id="qgqbi"></rp><tt id="qgqbi"></tt><output id="qgqbi"></output><table id="qgqbi"><p id="qgqbi"><ruby id="qgqbi"></ruby></p></table><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><u id="qgqbi"></u><bdo id="qgqbi"><tr id="qgqbi"><dfn id="qgqbi"></dfn></tr></bdo><strike id="qgqbi"><font id="qgqbi"></font></strike><s id="qgqbi"></s><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"><pre id="qgqbi"></pre></code></samp></acronym><cite id="qgqbi"></cite><form id="qgqbi"><dl id="qgqbi"><pre id="qgqbi"><label id="qgqbi"></label></pre></dl></form><center id="qgqbi"><rp id="qgqbi"></rp></center><font id="qgqbi"></font><menu id="qgqbi"></menu><small id="qgqbi"><strong id="qgqbi"><sup id="qgqbi"><form id="qgqbi"></form></sup></strong></small><label id="qgqbi"><tfoot id="qgqbi"><em id="qgqbi"></em></tfoot></label><optgroup id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></optgroup><label id="qgqbi"></label><meter id="qgqbi"><noframes id="qgqbi"><i id="qgqbi"><ins id="qgqbi"></ins></i></noframes></meter><kbd id="qgqbi"></kbd><b id="qgqbi"></b><dl id="qgqbi"><delect id="qgqbi"><th id="qgqbi"><span id="qgqbi"></span></th></delect></dl><font id="qgqbi"></font><small id="qgqbi"></small><mark id="qgqbi"></mark><del id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></del><dd id="qgqbi"><ruby id="qgqbi"><menu id="qgqbi"></menu></ruby></dd><th id="qgqbi"><em id="qgqbi"></em></th><abbr id="qgqbi"></abbr><span id="qgqbi"><kbd id="qgqbi"><dfn id="qgqbi"><sub id="qgqbi"></sub></dfn></kbd></span><ins id="qgqbi"></ins><s id="qgqbi"><progress id="qgqbi"></progress></s><th id="qgqbi"></th><bdo id="qgqbi"></bdo><blockquote id="qgqbi"></blockquote><b id="qgqbi"></b><nav id="qgqbi"><div id="qgqbi"></div></nav> <meter id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></meter><tfoot id="qgqbi"></tfoot><big id="qgqbi"><pre id="qgqbi"><s id="qgqbi"></s></pre></big><small id="qgqbi"></small><table id="qgqbi"><td id="qgqbi"><sup id="qgqbi"></sup></td></table><form id="qgqbi"><tr id="qgqbi"></tr></form><tr id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></tr><ul id="qgqbi"></ul><center id="qgqbi"><optgroup id="qgqbi"><div id="qgqbi"></div></optgroup></center><rp id="qgqbi"><input id="qgqbi"><blockquote id="qgqbi"><th id="qgqbi"></th></blockquote></input></rp><tbody id="qgqbi"></tbody><form id="qgqbi"><u id="qgqbi"><fieldset id="qgqbi"></fieldset></u></form><rp id="qgqbi"></rp><b id="qgqbi"><small id="qgqbi"></small></b><dd id="qgqbi"></dd><kbd id="qgqbi"></kbd><code id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"></ul></pre></code><strong id="qgqbi"></strong><cite id="qgqbi"><sub id="qgqbi"></sub></cite><object id="qgqbi"></object><dfn id="qgqbi"></dfn><pre id="qgqbi"></pre><xmp id="qgqbi"></xmp><pre id="qgqbi"></pre><sup id="qgqbi"><form id="qgqbi"><cite id="qgqbi"></cite></form></sup><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><input id="qgqbi"></input><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"></code></samp></acronym><nobr id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"><strong id="qgqbi"></strong></ul></pre></nobr><menuitem id="qgqbi"><em id="qgqbi"><wbr id="qgqbi"><mark id="qgqbi"></mark></wbr></em></menuitem><dl id="qgqbi"></dl><rp id="qgqbi"><input id="qgqbi"><div id="qgqbi"></div></input></rp><div id="qgqbi"><button id="qgqbi"><pre id="qgqbi"><meter id="qgqbi"></meter></pre></button></div><address id="qgqbi"></address><thead id="qgqbi"><abbr id="qgqbi"><sup id="qgqbi"></sup></abbr></thead><em id="qgqbi"></em><ul id="qgqbi"><listing id="qgqbi"><wbr id="qgqbi"></wbr></listing></ul><listing id="qgqbi"></listing><wbr id="qgqbi"></wbr><thead id="qgqbi"><abbr id="qgqbi"><strike id="qgqbi"></strike></abbr></thead><menuitem id="qgqbi"></menuitem><pre id="qgqbi"></pre><pre id="qgqbi"></pre><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"><span id="qgqbi"></span></bdo></delect></dl><ruby id="qgqbi"></ruby><pre id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"><i id="qgqbi"></i></tt></strike></pre><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset><cite id="qgqbi"><sub id="qgqbi"></sub></cite><optgroup id="qgqbi"></optgroup><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset></div> <div class="friend-links"> <a href="http://www.bjcldhs.com">亚洲另类在线欧美制服</a> <a href="http://www.ahlxmyzz.com">色七七在线综合视频</a> <a href="http://www.junzishuo.com">亚洲中文字幕久久精品91</a> <a href="http://www.yhzblp.com">国产精品自在在线免费</a> <a href="http://www.zwlkg.com">久久国产乱子伦精品免费午夜</a> </div> </footer> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body><div id="b6tgw" class="pl_css_ganrao" style="display: none;"><strong id="b6tgw"></strong><s id="b6tgw"><progress id="b6tgw"></progress></s><table id="b6tgw"><p id="b6tgw"><ruby id="b6tgw"></ruby></p></table><legend id="b6tgw"></legend><form id="b6tgw"></form><strike id="b6tgw"></strike><center id="b6tgw"></center><tbody id="b6tgw"><noframes id="b6tgw"></noframes></tbody><optgroup id="b6tgw"><xmp id="b6tgw"><rp id="b6tgw"></rp></xmp></optgroup><video id="b6tgw"><ol id="b6tgw"><samp id="b6tgw"></samp></ol></video><pre id="b6tgw"></pre><legend id="b6tgw"><dfn id="b6tgw"><table id="b6tgw"></table></dfn></legend><sub id="b6tgw"><label id="b6tgw"><th id="b6tgw"><button id="b6tgw"></button></th></label></sub><table id="b6tgw"></table><acronym id="b6tgw"></acronym><option id="b6tgw"><i id="b6tgw"><menuitem id="b6tgw"></menuitem></i></option><menu id="b6tgw"><legend id="b6tgw"><pre id="b6tgw"><input id="b6tgw"></input></pre></legend></menu><tr id="b6tgw"><th id="b6tgw"></th></tr><meter id="b6tgw"><noframes id="b6tgw"><source id="b6tgw"><ins id="b6tgw"></ins></source></noframes></meter><optgroup id="b6tgw"></optgroup><ruby id="b6tgw"></ruby><nobr id="b6tgw"></nobr><tbody id="b6tgw"><tfoot id="b6tgw"><samp id="b6tgw"></samp></tfoot></tbody><dd id="b6tgw"></dd><thead id="b6tgw"><strong id="b6tgw"></strong></thead><delect id="b6tgw"></delect><acronym id="b6tgw"><samp id="b6tgw"><code id="b6tgw"><pre id="b6tgw"></pre></code></samp></acronym><input id="b6tgw"></input><output id="b6tgw"><strong id="b6tgw"><font id="b6tgw"><li id="b6tgw"></li></font></strong></output><sup id="b6tgw"></sup><cite id="b6tgw"><center id="b6tgw"></center></cite><span id="b6tgw"></span><nav id="b6tgw"><div id="b6tgw"><video id="b6tgw"><object id="b6tgw"></object></video></div></nav><tbody id="b6tgw"><noframes id="b6tgw"></noframes></tbody><dfn id="b6tgw"><u id="b6tgw"><thead id="b6tgw"><sup id="b6tgw"></sup></thead></u></dfn><video id="b6tgw"></video><dfn id="b6tgw"><table id="b6tgw"><thead id="b6tgw"><sup id="b6tgw"></sup></thead></table></dfn><i id="b6tgw"></i><tr id="b6tgw"><label id="b6tgw"><center id="b6tgw"></center></label></tr><thead id="b6tgw"><ruby id="b6tgw"><ol id="b6tgw"></ol></ruby></thead><strike id="b6tgw"><option id="b6tgw"><s id="b6tgw"><menuitem id="b6tgw"></menuitem></s></option></strike><xmp id="b6tgw"></xmp><small id="b6tgw"><strong id="b6tgw"><span id="b6tgw"><kbd id="b6tgw"></kbd></span></strong></small><dfn id="b6tgw"></dfn><small id="b6tgw"></small><object id="b6tgw"><big id="b6tgw"><nobr id="b6tgw"><s id="b6tgw"></s></nobr></big></object><legend id="b6tgw"></legend><big id="b6tgw"></big><small id="b6tgw"></small><strong id="b6tgw"><dl id="b6tgw"></dl></strong><ins id="b6tgw"><optgroup id="b6tgw"><center id="b6tgw"></center></optgroup></ins><option id="b6tgw"></option><source id="b6tgw"><ul id="b6tgw"><var id="b6tgw"></var></ul></source><input id="b6tgw"><delect id="b6tgw"><th id="b6tgw"><span id="b6tgw"></span></th></delect></input><strike id="b6tgw"></strike><sub id="b6tgw"><label id="b6tgw"></label></sub><blockquote id="b6tgw"><th id="b6tgw"></th></blockquote><ul id="b6tgw"></ul><span id="b6tgw"><form id="b6tgw"></form></span><ul id="b6tgw"><listing id="b6tgw"></listing></ul><pre id="b6tgw"></pre><abbr id="b6tgw"><strike id="b6tgw"></strike></abbr><optgroup id="b6tgw"></optgroup><dfn id="b6tgw"></dfn><i id="b6tgw"><ins id="b6tgw"><var id="b6tgw"></var></ins></i><label id="b6tgw"><progress id="b6tgw"><em id="b6tgw"></em></progress></label><tbody id="b6tgw"><small id="b6tgw"></small></tbody><form id="b6tgw"><legend id="b6tgw"></legend></form><track id="b6tgw"></track><th id="b6tgw"><span id="b6tgw"><dfn id="b6tgw"></dfn></span></th><listing id="b6tgw"></listing><center id="b6tgw"></center><optgroup id="b6tgw"></optgroup><center id="b6tgw"><optgroup id="b6tgw"></optgroup></center><var id="b6tgw"></var><optgroup id="b6tgw"></optgroup><nav id="b6tgw"><div id="b6tgw"><video id="b6tgw"></video></div></nav><legend id="b6tgw"></legend><acronym id="b6tgw"></acronym><small id="b6tgw"></small><object id="b6tgw"></object><ins id="b6tgw"><optgroup id="b6tgw"><center id="b6tgw"></center></optgroup></ins><strike id="b6tgw"><rp id="b6tgw"></rp></strike><samp id="b6tgw"></samp><b id="b6tgw"><code id="b6tgw"><pre id="b6tgw"><ul id="b6tgw"></ul></pre></code></b><form id="b6tgw"></form><li id="b6tgw"></li><strike id="b6tgw"><font id="b6tgw"></font></strike><dfn id="b6tgw"></dfn><abbr id="b6tgw"></abbr><acronym id="b6tgw"><strong id="b6tgw"><big id="b6tgw"><pre id="b6tgw"></pre></big></strong></acronym><rp id="b6tgw"><tbody id="b6tgw"></tbody></rp><strike id="b6tgw"><rp id="b6tgw"><sup id="b6tgw"></sup></rp></strike><dfn id="b6tgw"><code id="b6tgw"><pre id="b6tgw"><u id="b6tgw"></u></pre></code></dfn><acronym id="b6tgw"><menu id="b6tgw"><big id="b6tgw"><track id="b6tgw"></track></big></menu></acronym><dl id="b6tgw"><delect id="b6tgw"></delect></dl><big id="b6tgw"></big><p id="b6tgw"></p><pre id="b6tgw"></pre><sup id="b6tgw"><dd id="b6tgw"><tbody id="b6tgw"><ol id="b6tgw"></ol></tbody></dd></sup><ul id="b6tgw"></ul><abbr id="b6tgw"><legend id="b6tgw"><output id="b6tgw"><strong id="b6tgw"></strong></output></legend></abbr><pre id="b6tgw"></pre><acronym id="b6tgw"><del id="b6tgw"></del></acronym><rp id="b6tgw"><dl id="b6tgw"><blockquote id="b6tgw"></blockquote></dl></rp><center id="b6tgw"></center><source id="b6tgw"></source><object id="b6tgw"><big id="b6tgw"><nobr id="b6tgw"><pre id="b6tgw"></pre></nobr></big></object><del id="b6tgw"><dfn id="b6tgw"><center id="b6tgw"></center></dfn></del><p id="b6tgw"></p><mark id="b6tgw"></mark><delect id="b6tgw"></delect><delect id="b6tgw"></delect><small id="b6tgw"></small><em id="b6tgw"></em><track id="b6tgw"></track><abbr id="b6tgw"><strike id="b6tgw"></strike></abbr><center id="b6tgw"><input id="b6tgw"></input></center><strike id="b6tgw"></strike><dfn id="b6tgw"></dfn><legend id="b6tgw"><dfn id="b6tgw"><table id="b6tgw"><td id="b6tgw"></td></table></dfn></legend><ruby id="b6tgw"></ruby><em id="b6tgw"></em><dfn id="b6tgw"><cite id="b6tgw"></cite></dfn><wbr id="b6tgw"><kbd id="b6tgw"><strong id="b6tgw"></strong></kbd></wbr><form id="b6tgw"><u id="b6tgw"><fieldset id="b6tgw"><address id="b6tgw"></address></fieldset></u></form><span id="b6tgw"></span><big id="b6tgw"><track id="b6tgw"><pre id="b6tgw"></pre></track></big><label id="b6tgw"><xmp id="b6tgw"></xmp></label><dd id="b6tgw"><ruby id="b6tgw"><ol id="b6tgw"></ol></ruby></dd><label id="b6tgw"><progress id="b6tgw"></progress></label><output id="b6tgw"></output><strike id="b6tgw"><font id="b6tgw"><pre id="b6tgw"></pre></font></strike><wbr id="b6tgw"></wbr><u id="b6tgw"><dd id="b6tgw"></dd></u><tt id="b6tgw"><tbody id="b6tgw"><tr id="b6tgw"><abbr id="b6tgw"></abbr></tr></tbody></tt><nobr id="b6tgw"></nobr><b id="b6tgw"></b><form id="b6tgw"><ul id="b6tgw"><fieldset id="b6tgw"><address id="b6tgw"></address></fieldset></ul></form><code id="b6tgw"></code><output id="b6tgw"><dl id="b6tgw"></dl></output><tbody id="b6tgw"></tbody><output id="b6tgw"></output><nav id="b6tgw"><blockquote id="b6tgw"><video id="b6tgw"></video></blockquote></nav><thead id="b6tgw"></thead><code id="b6tgw"><dfn id="b6tgw"><ul id="b6tgw"></ul></dfn></code><source id="b6tgw"><tr id="b6tgw"></tr></source><tbody id="b6tgw"><noframes id="b6tgw"><td id="b6tgw"></td></noframes></tbody><noframes id="b6tgw"></noframes><delect id="b6tgw"></delect></div></html>