“氮气”造句

大气中含有70%以上的氮气.
The atmosphere consist of more than 70 % of nitrogen.

这只是对威尔逊氮气云室的一种改进.
It was an adaptation of Wilson's cloud chamber, filled with nitrogen gas.

采气管得用氮气吹扫.
Sample gas tubes are flushed with nitrogen.

• #氮气