名词
中文翻译：电流继电器
同义词：
['current switch', 'current breaker', 'current interrupter']
例句：
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1. The circuit breaker is designed to protect the electrical system from overloads.
电路断路器旨在保护电气系统免受过载。
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2. The relay controls the flow of power in a power grid.
继电器控制电网中的电力流动。
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3. The relay switches the power when the main switch is closed.
当主开关闭合时，继电器切换电源。