冲击锤冲程频率范围
hammer stroke frequency range
冲击锤冲程频率范围阀
hammer stroke frequency range valve
冲击锤冲程频率范围开关
hammer stroke frequency range switch
地震扰动的频率范围
seismic disturbance range of frequencies
爆炸磁频率发生器
Explosive magnetic generator of frequency
EMGF
algoscopy
标准频率发生器
standard-frequency generator
电压变化的发生率
rate of occurrence of voltage changes
耿氏效应固态频率发生器
Gunn effect solid state frequency source
固定频率发生器
fixed frequency generator
捷变频率发生器
frequency agile generator
可变频率发生器
variable frequency generator
可变频率发生器控制器
VFGC Variable Frequency Generator Control