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1. Oxford American Dictionary

   SI unit

   • n.
     a physical unit in the international SI system, which is based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten.

   • noun: SI unit, plural noun: SI units

2. • 相關詞

   SI base unit

   • n.
     (in the international SI system) a fundamental unit that is defined arbitrarily and not by ...

   Oxford Dictionary

   SI-derived unit

   • n.
     Any of various units of measurement, such as the newton and tesla, that are derived from the ...

   HOUGHTON MIFFLIN

   SI base unit

   • n.
     (in the international SI system) a fundamental unit that is defined arbitrarily and not by ...

   Oxford American Dictionary

3. • 更多解釋

   SI unit

   • n.
     a physical unit in the international SI system, which is based on the metre, kilogram, second, ...

   Oxford Dictionary