“vapour density”的概念、定义、翻译、参考文献-科学参考

　

单词	vapour density
释义	vapour density Physics The density of a gas or vapour relative to hydrogen, oxygen, or air. Taking hydrogen as the reference substance, the vapour density is the ratio of the mass of a particular volume of a gas to the mass of an equal volume of hydrogen under identical conditions of pressure and temperature. Taking the density of hydrogen as 1, this ratio is equal to half the relative molecular mass of the gas. Chemistry The density of a gas or vapour relative to hydrogen, oxygen, or air. Taking hydrogen as the reference substance, the vapour density is the ratio of the mass of a particular volume of a gas to the mass of an equal volume of hydrogen under identical conditions of pressure and temperature. Taking the density of hydrogen as 1, this ratio is equal to half the relative molecular mass of the gas. Chemical Engineering The ratio of the density of a vapour or gas to hydrogen at the same temperature and pressure. The vapour ratio is therefore equal to the ratio of the mass of the vapour or gas to the mass of hydrogen occupying the same volume for the same temperature and pressure.
随便看	Nore mutiny (May 1797) norepinephrine NOR gate Norian Noriega, Carlos Ismael (1959– ) norite norm Norma Norma Arm normal normal approximation to the binomial distribution normal approximation to the Poisson distribution normal astrograph normal coordinates normal distribution normal equations normal fault normal field normal form normal form of conics normal forms normal good normal incidence normal inspection normality

　

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