名词
中文翻译：信号源
同义词：
['signal generator', 'signal source', 'power supply']
例句：
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1. The new phone has abuilt-in signal power source, soit doesn't need to be charged.
这款新手机内置了信号电源，所以不需要充电。
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2. The signal power source is responsiblefor transmitting and receiving signals.
信号电源负责发送和接收信号。
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3. The powersupply is essential for theoperation of the electronic device.
电源对于电子设备的运行至关重要。