oxygen gas中文什么意思

例句与用法

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1. some electron donor was oxidized to yield oxygen gas .
   某些电子供体被氧化产生氧气。
2. these atoms recombine in pairs during the night to form molecules of oxygen gas .
   在夜间，这些氧原子再成对地结合成氧气分子。
3. yet oxygen gas did not begin to accumulate in the atmosphere until about 2 billion years ago .
   但是大约在20亿年前，氧气才开始在大气层中积累。
4. compressed oxygen gas tank
   压缩氧气筒
5. oxygen gas analyzer
   耗氧量计算机