单词	double-word command
释义	double-word command 双字命令,通道控制双字
随便看	frequency shifters Frequency Shift Filter frequency-shift filter frequency shift filtering technology frequency shift FS frequency shift indicator frequency-shift indicator frequency shifting frequency-shifting frequency-shifting automatic block Frequency Shift Key frequency shift keyed frequency shift keyed modulation frequency shift keyed radio channel frequency shift keyer frequency-shift keyer frequency shift keying frequency-shift keying frequency shift keying demodulator frequency shift keyingfsd frequency shift keyingfsk frequency-shift keyingfsk frequency shift keying fsk frequency shift keying FSK frequency shift keying,FSK