si unit是什么意思

2023-12-26 07:09:16

si unit

近义词：SI，internationalsystemofunits，SIsystem，SystemeInternationaldUnites，

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 dUnites"