名词
中文翻译：单掷开关
同义词：
['single throw relay', 'single throw switch', 'single throw relay switch']
例句：
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1. The engineer needsto replace the single throw switch on the circuit board.
工程师需要更换电路板上的单掷开关。
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2.The technician found that the single throw switch was faulty and needed to be replaced.
技术人员发现单掷开关有故障，需要更换。
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3. The electrical engineer designed a new single throw switch for the lighting system.
电气工程师为照明系统设计了一个新的单掷开关。