vacuum tube是什么意思 vacuum tube怎么读
vacuum tube的英文翻译是什么意思，词典释义与在线翻译
Noun:- electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
vacuum tube的用法和样例
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。
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