高频主电源
high-frequency central power
电源频率
power frequency
line frequency
power supply frequency
Frequency
frequency of electric source
mains frequency
电源频率偏差
power frequency deviation
电源频率指示器
mains frequency indicator
电子电源频率调节装置
electronic power frequency control system
恒定电压恒定频率电源
constant voltage and constant frequency power
同频率电源
Power sources with the same frequency
应急电源频率监控
emergency source frequency monitoring
应急电源频率监控卡
emergency source frequency monitoring card
Mel频率主分量参数MFPC
Mel Frequency Principal Coefficient MFPC
高频电主轴
high-frequency grinding spindles
High-frequency Motor Spindle
微机主电源
Tiny machine main power supply
悬浮主电源
Levitation main power supply
主电源
primary power supply
primary power
main power
main power supply
power source
main source of electrical power
primary source
Electrical mains
mains