英语词汇“evacuated tube”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	evacuated tube
释义	evacuated tube 基本例句电子管 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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