单词 | Systeme International d'Unites |
释义 | Systeme International d'Unites (extremely rare) n WORD FAMILY Systeme International d'Unites n 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) Syn|Hyper International System, International System of Units, SI, SI system, SI unit, Systeme International metric system a decimal system of weights and measures based on the meter and the kilogram and the second |
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