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href="http://www.cdcfah.com/cp/third-gongyeqiti_danqi/">氮?dú)?/a>?海北州本地氮?dú)庠趺绰?lián)系歡迎來電海東市平安區(qū)永安氣體供應(yīng)</p><div id="cjgnpjl" class="leftbox clearfix"><h1>海北州本地氮?dú)庠趺绰?lián)系歡迎來電海東市平安區(qū)永安氣體供應(yīng)</h1><div id="jjl77fz" class="proBig"><div id="ynkroa3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/JC004/637263497576679688/7674283.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lfcegsp" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/JC004/637263497576679688/7674283.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xhzgipm" 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>青海省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>海北州本地氮?dú)庠趺绰?lián)系</p><p><span>***更新：</span>2020-06-05 06:06:57</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="lvhelco" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">海東市平安區(qū)永安氣體有限公司</a></p><p><span>聯(lián)系人：</span>羅崇山</p><p><span>郵箱: </span>794819198@qq.com</p><p><span>電話: </span>15117121314</p><p><span>傳真: </span>0972_5925363</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0972-5925363</p><p><span>地址: </span>平安區(qū)古城鄉(xiāng)新莊爾村</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="x777ov2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3xryfro" class="box"><p><p style="text-indent:25px">由于氮的化學(xué)惰性，常用作保護(hù)氣體，如：瓜果，食品，燈泡填充氣。以防止某些物體暴露于空氣時(shí)被氧所氧化，用氮?dú)馓畛浼Z倉(cāng)，可使糧食不霉?fàn)€、不發(fā)芽，長(zhǎng)期保存。液氮還可用作深度冷凍劑。作為冷凍劑在醫(yī)院做除斑，包，豆等的手術(shù)時(shí)常常也使用，即將斑，海北州本地氮?dú)庠趺绰?lián)系，包，豆等凍掉，并不建議使用。高純氮?dú)庥米魃V儀等儀器的載氣。用作銅管的光亮退火保護(hù)氣體。跟高純氦氣、高純二氧化碳一起用作激光切割機(jī)的激光氣體。氮?dú)庖沧鳛槭称繁ｕr保護(hù)氣體的用途。在化工行業(yè)，氮?dú)庵饕米鞅Ｗo(hù)氣體、置換氣體，海北州本地氮?dú)庠趺绰?lián)系、洗滌氣體。用作鋁制品，海北州本地氮?dú)庠趺绰?lián)系、鋁型材加工，鋁薄軋制等保護(hù)氣體。用作回流焊和波峰焊配套的保護(hù)氣體，提高焊接質(zhì)量。用作浮法玻璃生產(chǎn)過程中的保護(hù)氣體，防錫槽氧化</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州本地氮?dú)庠趺绰?lián)系" src="https://tyunfile.71360.com/UploadFile/JC004/637263497576679688/7674283.jpg"></div><p> .在國(guó)民經(jīng)濟(jì)和日常生活中，氮?dú)庥?**的用途。首先，利用它“性格孤獨(dú)”的特點(diǎn)，我們將它充灌在電燈泡里，可防止鎢絲的氧化和減慢鎢絲的揮發(fā)速度，延長(zhǎng)燈泡的使用壽命。還可用它來代替惰性氣體作焊接金屬時(shí)的保護(hù)氣。在博物館里，常將一些貴重而稀有的畫頁(yè)、書卷保存在充滿氮?dú)獾膱A筒里，這樣就能使蛀蟲在氮?dú)庵斜粣炈?。利用氮?dú)馐辜Z食處于休眠和缺氧狀態(tài)、代謝緩慢，可取得良好的防蟲、防霉和防變質(zhì)效果，糧食不受污染，管理比較簡(jiǎn)單，所需費(fèi)用也不高，故近年來進(jìn)展較快。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州本地氮?dú)庠趺绰?lián)系" src="https://tyunfile.71360.com/UploadFile/JC004/637263497578027344/5780348.jpg"></div><p style="text-indent:25px">氮?dú)庹即髿饪偭康?8。12%（體積分?jǐn)?shù)），在標(biāo)準(zhǔn)情況下的氣體密度是1。25g/L，氮?dú)庠谒锶芙舛群苄?，在常溫常壓下?體積水中大約只溶解0。02體積的氮?dú)狻Ｋ莻€(gè)難于液化的氣體。在水中的溶解度很小，在283K時(shí)，一體積水約可溶解0。02體積的N2,氮?dú)庠跇O低溫下會(huì)液化成無(wú)色液體，進(jìn)一步降低溫度時(shí)，更會(huì)形成白色晶狀固體。在生產(chǎn)中，通常采用黑色鋼瓶盛放氮?dú)狻；瘜W(xué)性質(zhì)氮?dú)夥肿拥姆肿榆壍朗綖?對(duì)成鍵有貢獻(xiàn)的是三對(duì)電子，即形成兩個(gè)π鍵和一個(gè)σ鍵。對(duì)成鍵沒有貢獻(xiàn)，成鍵與反鍵能量近似抵消，它們相當(dāng)于孤電子對(duì)。由于N2分子中存在叁鍵N≡N，所以N2分子具有很大的穩(wěn)定性，將它分解為原子需要吸收941。69kJ/mol的能量。N2分子是已知的雙原子分子中**穩(wěn)定的，氮?dú)獾南鄬?duì)分子質(zhì)量是28。氮?dú)饨Y(jié)構(gòu)式；而且氮?dú)獠灰兹紵也恢С秩紵?/p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海北州本地氮?dú)庠趺绰?lián)系" src="http://tyunfile.71360.com/UpLoadFile/2019/9/18/10/637043984983427830_JC004_9354036.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/151737.html</p></div></div></div></div></div><div id="yyvsfry" class="page-right twoColRt"><div id="yifcjax" class="box01 margin10 clearfix"><h3><a 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