frequency beat频率差拍
frequencyn.频繁;频率
frequency selector switch频率选择开关
frequency self-adapting频率自适应
frequency modulation data调频数据
Frequency Exchange Keying频率交换发报
frequency shift indicator移频指示器
frequency response tester频率响应测试器
frequency double klystron倍频速调管
frequency difference lime频率辨差阈
frequency domain analyzer频域分析仪
frequency-band-energy频带能量