uency converters 变频器

uency modulation 窄带档

uency terminal equipment 音频终端设备

uency terminating equipment bay 音频终端架

Echo frl uency 回波频率

radio freq uency 射频

Freq UEncy Adverb 频率副词

uency sideband equalizer 射频边带均衡器

freq uency conversion supercharging 变频增压

uency binary-code sendind equipment 音频二元码发送设备