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单词 International System of Units
释义
International System of Units
(once / 909178 pages)
n

WORD FAMILY
International System of Units
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, SI, SI system, SI unit, Systeme International, Systeme International d'Unites
metric system
a decimal system of weights and measures based on the meter and the kilogram and the second
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