您要查找的是不是：
- 差頻APLLdifference frequency APLL
- 晶體分頻APLLCrystal frequency-division APLL
- 差頻耦合difference frequency coupling
- 差頻過(guò)程different frequency generation
- 差頻控制slip frequency control
- 差分difference
- 標準差root-mean-square error (RMS error)
- 頻數frequence
- 差一點(diǎn)by a finger's breadth
- 差的inferiors
- 主頻dominant frequency
- 倍頻frequency doubling
- 不差little short of
- 載頻carrier frequency
- 差旅travel
- 變差variation of rate
- 頻點(diǎn)frequency point
- 越來(lái)越差worse and worse
- 差速器compensating gear
- 殘差residual error
