您要查找的是不是：
- T频power frequency
- 频数frequence
- 主频dominant frequency
- 倍频frequency doubling
- 载频carrier frequency
- 分频frequency demultiplication
- 分频器frequency demultiplier
- 频点frequency point
- 频发take place frequently
- 频闪stroboscopic
- 扩频spread spectrum
- 导频pilot frequency
- 双频double frequency
- 混频mixing
- 扫频frequency sweep
- 跳频frequency hopping
- 频响frequency response
- 频偏frequency swing
- 场频field repetition rate
- 扩频通信spread spectrum communication
