pulse phase modulation-amplitude modulation system脉冲: impulse; pulse; impulsion; o ...调相: phase modulation photograph调幅: amplitude modulation; amplit ...制: make; manufacture脉冲调相: pulse phase modulation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:脉冲调相-调幅制，即可在微信中查询翻译
