criterion for noise control
noise figure
噪声数值
相位噪声
噪声系数
噪音系数
噪声因数
噪声因子
杂讯度
噪声指数
噪声度
杂讯指数
噪音指数
噪音因子
噪声图
噪声指标
噪音度
噪声
操声因子
低噪系数
躁声系数
noise measuring apparatus
noise measuring instrument
technique for noise reduction
acoustic method for measuring temperature
admittance round measuring equipment
area measuring equipment
biophysiological measuring equipment
blood-flow measuring equipment
bridge for measuring temperature
Calibration of measuring equipment
capacity coupling measuring set
Curve for Measuring Strength
density measuring equipment
differential phase measuring set
distance measuring equipment
测距装置
测距装备
测距设备
测距机
量距装置
量距离
量距器
dynamic function measuring equipment