Subject	English	Chinese
el.	discrete-time pulse-frequency modulation	离散时间脉冲频率调制
el.	frequency modulation/time division multiple access	调频/时分多址
geophys.	frequency time modulation	频率时间调制
space	frequency/time modulation	频率/时间调制
oil	time-frequency modulation	时频调制
agric.	time-frequency modulation	时-频调整
avia.	time-frequency-phase modulation	时频相调制
el.	time-quantized frequency modulation	时间量化频率调制