国际单位制(SI)的新变化

New Variations of International System of Units(SI)

在新版的《国际单位制(SI)》中,SI单位的含义发生了重大变化,取消了"辅助单位"这一分类类别,此外新增一个具有专门名称的一贯SI导出单位katal。基于上述变化,我国法定计量单位的构成体系也发生了相应变化。

In new editions of《The International System of Units(SI)》,contents of SI units changed sig- nificantly,the class of supplementary units as a separate class in the SI was eliminated,in addition, katal ,one SI coherent derived unit with special name,was added newly.For the above changes,constit- uent system of legal units of measurement of our country also changed correspondingly.