abbr. <法>国际单位制（=Systeme International unit； =International System of Units）
英英释义
Noun:
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);
"Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"
美
