名词
中文翻译：闪光继电器
同义词：
['flash relay', 'optoisolator']
例句：
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1.The flash relay is used to switch power quickly when there's an electrical fault.
闪光继电器用于在发生电气故障时快速切换电源。
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2. The flash relay was designed to protect the circuit from damage during a lightning strike.
闪光继电器被设计来在雷击期间保护电路免受损害。
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3. The engineer tested the flash relay before installing it in the new system.
工程师在安装新系统之前测试了闪光继电器。