详细解释:【经】 国际通用单位制
英语解释：
名词 international system of units:
a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela)同义词：Systeme International d'Unites, Systeme International, SI system, SI, International System