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F 开头的英语单词（共 143,619 个）
frequency shift receiver
移频接收机
frequency shift signalling
[电] 移频发讯
frequency shift system
[电] 移频系统
frequency shift theorem
[数] 频率位移定理
frequency shift transmission
[计] 移频传输
frequency shift transmitter monitor
频移发射机监控装置
frequency shifters
频率移相器
frequency shifting
频率位移
frequency signal
率信号
frequency slicing
频率分段
frequency slope modulation
[通信] 频率斜率调制
frequency sounder
[电磁]频率测深仪
frequency sounding
频率测深
frequency sounding instrument
[网络] 频率测深仪
frequency sounding method
[电磁]频率测深法
frequency source
[物] 频率源
frequency space
[计] 频率空间
frequency spacing
频率间隔
frequency span
频带宽度[间隔]
frequency spectrum
[化] 频谱