| 释义 |
base unit
base unit n (Units) physics any of the fundamental units in a system of measurement. The base SI units are the metre, kilogram, second, ampere, kelvin, candela, and mole base unitUnit of organization in a tactical operation around which a movement or maneuver is planned and performed.base unit
base unit[′bās ‚yü·nət] (physics) One of a small number of units in a system of measurement that are defined, independent of other units, by means of a physical standard; equivalently, a unit of a base quantity. Also known as fundamental unit. base unit
base unitn. Any of the fundamental units of length, mass, time, electric current, thermodynamic temperature, amount of substance, or luminous intensity in the International System of Units, consisting respectively of the meter, kilogram, second, ampere, kelvin, mole, and candela. |