频[率]调[变]调频
frequency modulation {= FM
时间-时间-时间交换网络
Time-Time-Time Switching Network TTT
频率时间调制
frequency time modulation
FTM Frequency Time Modulation
时间频率调谐特性
temporal frequency tuning
双线性时间-频率变换
bilinear time-frequency transformation
双音调调变频率
dual tone modulation frequency
Hilbert谱瞬时频率变异系数
variance coefficients of instantaneous frequency o
调变频率比
modulation frequency ratio
功率—频率调节器
power-frequency electronic regulator
互调变频率
intermodulation frequency
肌电图的中间频率变数
Median frequency parameters
积分脉波频率调变
integral pulse frequency modulation