vacuum tube
vacuum-tube的词性:n.Abbr. VT(名词)缩写 VT
1. An electron tube from which all or most of the gas has been removed, permitting electrons to move with low interaction with any remaining gas molecules.真空管:一种内部空气全部或部分抽空的电子管,从而使电子在不受或少受空气分子的干扰下运动