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单词 base unit
释义

WordReference Random House Unabridged Dictionary of American English © 2024
base unit, [Physics.]
  1. Physicsone of the units, as mass, length, time, or electric current, taken as a basis for a system of units in the sciences. Also called fundamental unit. 

Collins Concise English Dictionary © HarperCollins Publishers::
base unit n
  1. any of the fundamental units in a system of measurement. The base SI units are the metre, kilogram, second, ampere, kelvin, candela, and mole
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