inert gases 惰性气体 ; 钝气
noble or inert gases 也称为惰性气体
compressed air & inert gases 压缩空气及惰性气体
inert gases shrouding 惰性气幕保护
metal inert gases arc welding 熔化极惰性气体保护焊
Inert gases and their pressures 惰性气氛及压强
ac tungsten inert gases welding 交流钨极氩弧焊
removal of radioactive inert gases 惰性气体放射性去除
Inert gases like neon and argon have eight electrons in their outer shell.
像氖和氩这样的惰性气体，在它们的外电子层有8个电子。
Versus looking at, for example, helium or neon or argon, these are all inert gases, inert meaning essentially do not react, those were grouped together in the periodic table.
相反，他发现氦，氖，氩，都是惰性气体，惰性的意思是基本不参与化学反应，因此把它们放在周期表中的同一类里。
Name: Noble gases, inert gases.
命名：稀有气体，惰性气体。
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