名词
中文翻译：信号控制继电器
同义词：
['control relay', 'signal relay']
例句：
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1. The signal control relay is responsiblefor monitoring and controlling the traffic lights.
信号控制继电器负责监控和控制交通灯。
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2. Thesignal control relay was designed to improve theefficiency of traffic flow.
信号控制继电器被设计来提高交通流的效率。
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3. The signal controlrelay is essential for maintaining safe driving conditionson highways.
信号控制继电器对于高速公路上保持安全驾驶条件至关重要。