详细解释:【计】 国际单位制, 串行接口, 移入
【医】 硅(14号元素,旧名矽)
英语解释：
名词 si:
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, International System of Units, International System