氮气层 blanket of nitrogen; nitrogen atmosphere; nitrogen blanket
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例句与用法
Sample gas tubes are flushed with nitrogen . 采气管得用氮气吹扫。
For liquid hydrogen system , helium purge is required after or before nitrogen purge 对于液氢系统用氮气吹扫之后,还要用氦气吹扫。
Before admitting hydrogen into a system , purge it with nitrogen to ensure that a flammable mixture cannot be developed 在允许氢气进入系统前,用氮气吹扫以保证系统不会产生可燃性混合物。