名词
中文翻译：Unknown
同义词：
['switch', 'relay', 'switchboard']
例句：
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1. The circuit switch is responsible for controlling the flow of electricity in the circuit.
电路开关负责控制电路中电流的流动。
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2. The engineer used a circuit switch to quickly disconnect the power source.
工程师使用电路开关迅速断开电源。
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3. The switchboard was designed to control the flow of gases through the pipeline.
开关板被设计用来控制气体通过管道的流动。