英语词汇“relative density”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	relative density
释义	Word Frequency relative density noun the ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same temperature and pressure as the substance Symbol: d. See also specific gravity, vapour density
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