变频试验电源
variable frequency power supply
常规机组试验电源
traditional generator set
厂用电源切换探讨
Switching Exploration of Service Power Source
电机变频试验电源网络系统
variable frequency power supply network system of motor
电源切换
switching over
electrical source exchange
电源切换装置
motor bus transfer device
调频式谐振试验电源
frequency-tuned resonant test power supply
调频谐振试验电源
frequency-tuned resonant test power supply
双电源切换
duplicate supply switching
dual power switch
双电源切换回路
dual power supply switching circuit
自动电源切换开关
automatic power changer-over switch
自用电源切换
switching over of auxiliary power system