纯氮pure helium纯氦纯度799.996 ,高纯氦纯度奏99.999%二无色无臭无味气体:微溶于水有较高的热导性，密度0.1785gIcm }沸点为一272.1 C. (f1.lfl1MPG]}氦置换空气可造成缺氧而产生窒息性巾毒。
996 中文名称 纯氮 英文名称 Pure nitrogen 使用程度 发布日期 1988-4-12 修改日期 1996-12-2 生效日期 1997-5-1 替换标准 被替换标准 备注 推荐
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The result shows that under the same nitriding time, better experiment effects was achieved by using pure nitrogen than NH3, and the former technique overcomes the disadvantage of NH3 which is inclined to produce environmental pollutions.
结果表明在相同的渗氮时间里，纯氮离子渗氮获得了比以氨气作为渗氮气源进行离子渗氮更好的效果。
参考来源 - 纯氮、氮—氨离子渗氮工艺和机理研究·2,447,543篇论文数据，部分数据来源于NoteExpress
氮循环也一样，它将空气中的纯氮转化成有用的化合物，而人类使其加速了150%以上。
So too is the nitrogen cycle, which converts pure nitrogen from the air into useful chemicals, and which mankind has helped speed up by over 150%.
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。
Using compositional soluble polysiloxane 1710a as film coating material, vacuum or high purity nitrogen pyrolysis experiments are made in different temperatures.
介绍了氮中微量氧标准气体在研究过程中稀释气体高纯氮中氧分析不确定度的评价依据，给出了评价过程和结果。
The analysis method was introduced for micro-oxygen in nitrogen calibration gases in this paper, at the same time we have definited the suitable analysis conditions and precision.
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