短語詞組短語waveform frequency distortion 波形頻率失真waveform amplitude distortion [電子]波形振幅失真waveform s distortion 波形失真voltage waveform sine distortion rate 電壓波形正弦性畸變率low waveform distortion 波形低失真field time waveform distortion [電子]場時間波形失真waveform distortion factor 波形失真率voltage waveform distortion rate 電壓波形畸變率line scanning waveform distortion [電子]行掃描波形畸變 返回 waveform distortion