vacuum tube
英
美
- tube n.管子；管状物；地铁；电视；管状器官v.提供或装上管子
- vacuum n.真空；真空吸尘器；空白adj.产生（利用）真空的v.用吸尘器打扫
Noun:
-
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
用作名词 (n.)
- Not any air gets into the vacuum tube.
没有空气能进入真空管。
- No vacuum or picture tubes were broken.
真空管或显影管都未破碎。
- In a radio tube there is a source of electrons.
在电子管中，有一个电子发射源。
- A tube or a transistor can amplify an incoming signal.
电子管和晶体管能放大输入的信号。
