a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
双语例句
A cathode ray tube is shaped like a large bell. 阴极射线管的形状象个大铃铛。
The device in a writing tube or CRT which generates the electron beam. 扫描管或阴极射线管中一种产生电子束的部件。
