vacuum-tube
英['vækjuəmtj'uːb]
美['vækjuəmtj'uːb]
- n.电子管
详细释义
名词 vacuum tube:
-
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
双语例句
- 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。
用作名词 (n.)
相关词汇
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