frequency lead频率导引
frequencyn.频繁;频率
frequency of continuous construction流水节拍
frequency-modulated carrier system调频载波系统
Frequency Coordination Working Group频率协调工作组
frequency conversionspeed regulating变频调速
frequency modulation for motor speed变频调速
frequency-hopping signal generator跳频信号源
frequency modulated signal generator调频信号发生器
Frequency-modulated radar receiver调频雷达接收机