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The original signal was a simple sine wave.
原始信号原先是一个简单的正弦波。
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The conversion of a modulated carrier wave into a current equivalent to the original signal.
将信号转变成适合于传输的被调制信号的一种操作装置。
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The conversion of a modulated carrier wave into a current equivalent to the original signal.
将信号转变成适合于传输的被调制信号的一种操作装置。
youdao