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vapour density

/ˈveɪpə ˈdensəti/

翻译: 化学术语,指蒸气的密度相对于氢气或空气密度的比值,常用于通过相对密度推算气体或蒸气的分子量。

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phrase

/ˈveɪpə ˈdensəti/C1formalscientific
  • zh化学术语,指蒸气的密度相对于氢气或空气密度的比值,常用于通过相对密度推算气体或蒸气的分子量。

A scientific term referring to the density of a vapor relative to that of hydrogen or air, often used in chemistry to determine the molecular weight of a gas or vapor.

  1. Relative density of a gasC2formal

    The density of a gas or vapour relative to that of hydrogen (or sometimes air) at the same temperature and pressure.

    zh相对密度

    • The vapour density of oxygen is 16, as it is 16 times heavier than hydrogen.
    • Chemists use vapour density to identify unknown gases.
    • Vapour density is calculated by comparing the mass of a given volume of gas to the mass of an equal volume of hydrogen.