Title:
tiaopinshouyinduijiangjibiyesheji
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Description: Radio is so widely used, principle is to send the audio signals into electrical signals, then through the modulation after the use of a particular frequency range to send out. Is to use the receiver to receive a specific frequency within the signal received by demodulation after the sound emitted by Yang received the voice message
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tiaopinshouyinduijiangjibiyesheji.doc
