| 释义 |
Noun: SI system- 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)
- Système International d'Unités, Système International, SI, SI unit, International System of Units, International System
Type of: metric system Encyclopedia: SI system |