气体的性质和液体的性质大不一样。
The properties of gas are quite different from those of liquid.
有的化学家研究气体的性质。
这里我讨论了气体的混合，这种混合改变了气体的某种性质。
Here we talked about a mixture in the gas phase, changing some property.
探讨分子射线源中气体性质的变化。
The change of the characters of gas in the source of molecular ray is studed.
探讨分子射线源中气体性质的变化。
The change of the characters of gas in the source of molecular ray is studed.
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