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单词
standard reference material
释义
standard reference material
Encyclopedia
理学
【试剂和试样】
释
standard reference material
标准参考物质
经过权威机构认证的某些具有确定含量的组分,在实际样品定量测定中用作计算被测组分含量的直接或间接参照标准的一类物质。计量工作者通常将其称为参考物质;而标准化工作者则更习惯将其称为标准样品(简称标样)。是特性量值准确、均匀性和稳定性良好的计量标准,具有在时间上保持特性量值、在空间上传递量值的功能。通过使用标准物质,可以使实际测量结果获得量值溯源性。
随便看
density estimation
density estimator
density evolution
density excess
density-exposure curve
density family
density flow
density fluctuation
density fluctuation and correlation near critical point
density function
density functional approximation
density functional based tight binding
density-functional based tight-binding
density functional method
density functional perturbation theory
density functional perturbation theory, DFPT
density functional theory
density functional theory, DFT
density function theory for polymer
density gauge
density gauge survey
density gradient centrifugation
density gradient method
density hole
density hypothesis
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