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Terms for subject Radio (869 entries)
floating-drift tube klystron 漂移管式速调管
fly back
forward propagation by ionospheric scatter 电离层散射传播
forward wave amplifier 前向波放大管
forward-wave crossed-field amplifier 前向波正交场放大管
frame 电视
frame scan 帧扫描电视
frequency changer 变频器
frequency changer 变频机
frequency diversity 率分集制
frequency modulated
frequency monitoring and interference control 频率监视与干扰控制
frequency monitoring and interference control 信号频率及干扰的控制
frequency shift system 移频制电极
frequency-division-modulation 频率划分调制
frequency-modulation amplitude-modulation multiplier 调频-调幅倍增器
frequency-modulation modulator 调频〔调制〕器
frequency-shift keying 移频键控〔法〕
full width at half maximum 在0.5电平下的最大带宽
full width at half maximum 半极限制时的全宽度波型