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将信号转变成适合于传输的被调制信号的一种操作装置。
The conversion of a modulated carrier wave into a current equivalent to the original signal.
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这个系统可以对语音信号进行有效的调制。
This system could modulate the voice signal effectively.
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被测信号为脉冲调制信号。
The input signal is pulse modulation.
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被测信号为脉冲调制信号。
The input signal is pulse modulation.
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