Today the mass standard is the last remaining SI unit based on an unique man-made object.
质量基准是迄今唯一保留人工制品的SI单位.
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Since the SI unit of length is the meter, these two definitions are equivalent.
长度的SI单位是米, 所以这两个定义是等价的.
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The unit of work and energy in the SI system is the joule ( J ).
在国际单位制(SI)中,功和能的单位是焦耳 ( J ).
词典精选例句
本文比较了室温下每原子质量单位能量相同的As2~+和As~+注入(100)Si所引入的辐射损伤。
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