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词汇 phase modulation
释义 phase modulationn.Abbr. pm, p-m(名词)缩写 pm, p-m
  1. A type of electronic modulation in which the phase of a carrier wave is varied in order to transmit the information contained in the signal.相位调制,调相:一种电子调幅,为了传递包含在信号中的信息,而使载波的相位改变
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