名词
中文翻译：单掷开关
同义词：
['single throw switch', 'single throw relay例句：1. The new circuit breaker uses a single-throw switch to prevent power surges.（这款新型断路器使用单掷开关来防止电涌。）']
例句：
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1. The new circuit breaker uses a single-throw switch to prevent power surges.
这款新型断路器使用单掷开关来防止电涌。
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2.The old manual switch was replaced with a single-throw switch for better safety.
旧的手动开关被一个单掷开关所取代，以获得更好的安全性。
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3.The engineer tested the single-throw switch before installing it in the factory.
工程师在工厂安装之前测试了单掷开关。