名词
中文翻译：电信号
同义词：
['electrical signal', 'electrical message', 'electrical impulse']
例句：
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1. The device sends an electric signal to the computer.
这个设备向计算机发送一个电信号。
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2. Electric signals are used for communication and control systems.
电信号用于通信和控制系统。
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3. The scientist detected an electric signal from the alien spaceship.
科学家从外星飞船上检测到了电信号。