《国际频率表》
international frequency tables
100Hz重复频率试验台
100 Hz rep-rate test stand RRTS
-3dB频率
2-Methacryloyloxyethyl)trimethylammonium) chloride
4次频率耦合
quartic frequency coupling
95%边缘频率
95% spetral edge frequency
Median power frequency
CMOS频率综合器
CMOS frequency-synthesizer
F2层临界频率
the critical frequency of the F2 layer
foF2
FFT频率估计
FFT based frequency wstimation
GPA基因突变频率
GPA gene mutation frequency