AT供电
the autotransformer feeding system
AT-fed
AT feeder line
AT feeding system
Autotransformer Power-supply
AT power supply
AT供电牵引网
AT feeding system for electric traction
TS1243采区供电设备
TS1243 electrical equipments
UPS供电方案与应用
The Project of UPS Power Supply and Application
UPS紧急供电方案
classical swine fever virus shimen strain
安全供电
safe power supply
safety power supply
Electricity supply safety
安全有序供电
secure and orderly power supply
变电压供电
power supply via voltage alteration
变流感应供电
alternating current power supplying