Nitrogen is not miscible with oil.
氮气与油不混相。
Evacuate the equipment and break vacuum with an inert gas, such as nitrogen.
对设备抽真空，然后充入不活泼气体，如氮。
Our own atmosphere is mostly nitrogen, with about twenty-percent being the oxygen we breathe.
我们地球上的大气主要是有氮组成，其中我们所呼吸的氧气大概占了20%。
It also set up the mechanism of over storage-nitrogen removal with SND.
并提出了过量储存SND脱氮作用机理。
It also set up the mechanism of over storage-nitrogen removal with SND.
并提出了过量储存SND脱氮作用机理。
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