低频电量测量
low frequency output measurement
低电平测量仪器
low-level instrumentation
路际电平测量仪
interchannel level measuring set
机载测量平台
airborne measuring device
载频测量
frequency measurement
Carrier frequency measurement
载频电平表
carrier frequency level meter
高频测量仪器
high-frequency measuring instrument
射频测量仪器
radio frequency measuring instrument
声频测量仪器
acoustic frequency measuring instrument
音频测量仪
sound-frequency measuring meter
音频电平测试仪
audio frequency level measuring equipment
背景噪声电平测量
background-noise level measurement
测量电量
measuring electric quantity
电测量仪表
electrical measuring instrument