“density metrology”的概念、定义、翻译、参考文献-科学参考

单词	density metrology
释义	density metrology Encyclopedia 工学密度计量释 density metrology密度计量对密度这一物理量所开展的计量活动。密度是表征物质内在特性的一个物理量，表示单位体积中所含有物质的质量，国际单位制中的单位为千克/米3。
随便看	uncertainty principle uncertainty problem uncertainty quantification uncertainty reasoning uncertainty reduction theory uncertainty relation uncertainty-sensitive planning uncertainty treatment of experimental data uncharged particle uncharmed unchecked unchirped UNCHR uncia unciform bone uncinate fasciculus uncinate process unciniger uncinus UNCITRAL UNCITRAL Model Law on Electronic Commerce UNCITRAL Model Law on Electronic Signature uncivil individuals uncivilized tribe unclassified tailings consolidated filling

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