国际单位制的基本常数综述  

Review of elementary constants in international system of units

作　　者：刘民[1] 孙毅[1] Liu Min;Sun Yi(Beijing Orient Institute of Measurement&Test(BOIMT),Beijing 100086,China)

机构地区：[1]北京东方计量测试研究所,北京100086

出　　处：《电子测量与仪器学报》2021年第1期1-9,共9页Journal of Electronic Measurement and Instrumentation

摘　　要：新的国际单位制(SI)从2019年5月20日正式实施,具有划时代的意义。综述从秒、米、千克、安培、开尔文、坎德拉、摩尔这7个基本物理单位到7个基本物理常数发展的过程,揭示他们之间的内在物理联系,对基本单位定义的含意进行深入剖析.在SI量纲表达中原7个基本单位仍然不可替代,但是已经不再作为量值溯源的源头,单位的定义也有所更新,而7个基本物理常数成为了量值溯源的根.展望了新的国际单位制对计量学发展的意义。The new international system of units(SI) had been implemented since 20 th May 2019, that has epoch making magnificent meaning. This review includes each developing process to seven constants from the seven elementary units of Second, Meter, Kilogram, Ampere, Kelvin, Candela, Mole and revealed intrinsic relationship between them, and gave the deep analysis of the meaning of the unit’s definitions. This old seven elementary units were still irreplaceable from SI dimension, but they have no more acted as the source of traceability, and their definition has been updated. However, the seven elementary constants have already become the root of traceability. Here also gives a prospect of the meaning that new SI will develop metrology.

关 键 词：计量学 国际单位制SI 基本物理常数 基本单位 

分 类 号：TB[一般工业技术]