载频电平测量仪  carrier frequency level measuring setup

选频电平表  selective level meter; frequency selective level meter; selective voltage and level meter

音频电平表  audio level meter

单路载频电话终端机  single-channel carrier frequency telephone terminal

多路载频电话终端机  multichannel carrier-frequency telephone terminal

高电平载波接收机  exalted-carrier receiver

信号过载电平  Signal overload level

载频电报终端机  carrier frequency telegraph terminal

载频电话  Telephony; carrier frequency

载频电缆  carrier frequency cable; frequency cable

载频频率偏移  carrier frequency offset

载频频偏  carrier frequency offset

RF射频电平  radio-frequency signal level

导频电平警报指示器  PWI

射频电平  RF level

选频电平指示器  frequency selective level indicator

音频电平测试仪  audio frequency level measuring equipment

音频电平监控  audio level attenuation

音频电平指示器  audio level indicator