Unit,SI

《英文msh詞典》Unit,SI
[入口詞] Unit,SI
[主題詞] International System of Units
[英文釋義] A system of physical units in which the fundamental quantities are length,time,mass,electric current,temperature,luminous intensity,and amount of substance,and the corresponding units are the meter,second,kilogram,ampere,kelvin,candela,and mole. The system has been given official status and recommended for universal use by the General Conference on Weights and Measures.