base bleed unit底排装置
Base Volume Unit基本体积单位
base si unit基本单位
BASE SHUTTLE UNIT梭组件集成
base station unit基站单元
knowledge base management unit翻译
Base Coating Unit打底油机头
Base Mill Unit基本磨机单位
motor base adjustment unit电动机调位装置
N（名词） any of the fundamental units in a system of measurement. The base SI units are the metre, kilogram, second, ampere, kelvin, candela, and mole 基本单位 [physics]