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。
随便看	green competitiveness of enterprises green competitiveness of firm green competitive power green component green composite cement green composites green compost green compound additive green compression strength green compression test green computer green computing green conceals green concept green concept in Chemistry green concrete green cone cells green conflict green-conflict green consciousness green construction green construction material green construction project green construction technology Green construetion