严禁使用氧气注入制冷系统试压！
Prohibited the use of oxygen injected into the cooling system pressure test!
使用氧气时应禁防油类！
你需要使用氧气作为处理气体来产生氧气等离子体。
我来为您示范一下氧气面罩的使用方法。
他不能不需要靠动力行进因为他在夜里使用一氧气罐。
He can't do without power because he USES an oxygen tank at night.
修复投入使用，氧气纯度达99.5%以上。
然而，这份研究却显示出慢性肺部疾病与家中的氧气使用方面，比率都提升了。
However, this study did show increased rates of chronic lung disease and home oxygen use.
所使用的氧气瓶、乙炔瓶有爆炸危险。
The air tank and acetic tank that been used has the potential of explosion.
所使用的氧气瓶、乙炔瓶有爆炸危险。
The air tank and acetic tank that been used has the potential of explosion.
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