英语词汇“vapor density”是什么意思，“vapor density”的读音、用法及例句翻译-乐坝网

词汇	vapor density
释义	vapor densityn.（名词） The ratio of the weight of a given volume of one gas to the weight of an equal volume of another gas, typically hydrogen, at the same temperature and pressure.蒸汽密度：一定量的一种气体的重量与相等量的另一种气体的重量，通常为氢气，在温度和压力相同时的比率
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