音频电疗法audiofrequency current therapy
声频范围audio band【声】;audiofrequency range【声】;
音频audiofrequency
音频振荡器audiofrequency oscillator
音频电疗机audiofrequency electrotherapy unit
【电学】声频变压器【电学】音频转换器audiofrequency transformer
声频，音频audiofrequency
频谱仪audiofrequency spectrometer