空气中的水蒸气含量变化很多。
降低压缩空气中水蒸气含量的这两种方法也有助于降低压缩空气中的油含量。
Reduce the water vapor in the compressed air of the two methods can also help reduce the oil content of compressed air.
叙述了乙烯氧化制环氧乙烷反应气中水蒸气含量对银催化剂反应性能的影响。
The influence of concentration of feed water vapor in process of ethylene oxidation on performance of silver catalyst was described.
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