标定频率  spot frequency; fixed frequency

频率频率开关  Frequency

低于额定频率  underfrequency

低于额定频率百分数卡  underfrequency pc card

定标标准与精度  radiometric standard

定标定律  scaling law; Scaling laws

定频率波  timing pulse

定频率波产生器  time-pulse generator

定频率波分配器  time-pulse distributor

定频率起搏器  fixed rate pacemaker

额定频率  rated frequency; nominal frequency; Full speed

额定频率范围  rated frequency range

额定频率整定点  rated frequency’s setting point

反射率标定  planar mirror

非特定频率天线  frequency-independent antenna

功率标定  marked power; power rating; power scaling

功率定标  Power calibration; power scaling

固定频率  fixed frequency; constant frequency; FF Fixed Frequency

固定频率PWM模式  fixed-frequency PWM mode