对氩、氖、氦等稀有贵重气体，往往要求气体中绝对无水，并不带有任何油质。

For argon, neon, helium and precious gas, often required in gas absolutely no water, does not have any oil.

youdao

对氩、氖、氦等稀有贵重气体，往往要求气体中绝对无水，并不带有任何油质。

For argon, neon, helium and precious gas, often required in gas absolutely no water, does not have any oil.

youdao