英语词汇“night alarm circuit”的读音、翻译、释义、用法及例句-语文网

词汇	night alarm circuit
释义	night alarm circuit 晚间报警电路一种音响报警电路，工作时把它接通，在无人监视的交换台有呼叫时能给出信号，以便操作员将这个交换台与接收站接通呼叫。
随便看	prescriptive prescriptive right preseason preselect preselection preselector presence Presence Bit presence of mind present presentability presentable presentably present arms present at presentation presentation presentational presentation copy presentation graphics presentationism Presentation Layer Presentation Layer presentation medium presentation services

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