关键词 】氮气纯度；超标；氮压机；管网 [gap=497]Key words】nitrogen purity; deviation; nitrogen compressor; pipeline network
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Nitrogen purity is 氮气的纯度是
high purity nitrogen [化学] 高纯氮
high purity nitrogen plant [机] [化学] 高纯氮设备
High Purity Nitrogen Generator 高纯度氮气生产机 ; 年
high purity nitrogen trifluoride 高纯三氟化氮
high purity nitrogen dioxide 高纯二氧化氮
nitrogen gas purity 氮气纯度
Common purity nitrogen as the material, through some special technics, wipe off the oxygen and water in nitrogen, then get high purity nitrogen.
利用普氮为原料，通过一定的特殊工艺的处理，去除普氮中的氧、水等杂质，得到高纯氮气。
The separated nicotine is twice vacuum distilled in protective nitrogen to obtain nicotine product with purity over 98 % at yield over 83 %.
分出烟碱，在氮气保护下进行两次真空蒸馏即可得到98％以上的烟碱产品，产率在83％以上。
Using compositional soluble polysiloxane 1710a as film coating material, vacuum or high purity nitrogen pyrolysis experiments are made in different temperatures.
用组合成的可溶性聚硅烷1 71 0 A作涂膜材料，进行不同温度的真空热解或高纯氮下热解实验。
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