ballhead pilot valve bushing
licenced pilot [= licensed pilot]
pilot reform; reform experimentation; pilot restructuring enterprise
1000 kV AC power transmission pilot project
1000kV power transmission pilot project
750 kV power transmission and transformation pilot project
750 kV transmission and transformation pilot project
750 kV transmission pilot project
750kV示范工程
750 kV输变电工程
750kV输变电示范工程
750kV transmission and transformation pilot project
ABB: Pilot Industry’S Development
AC pilot relaying
交流控制继电保护
交流辅助线继电保护系统
交流副线电驿系统
advanced angle of beginning of injection of diesel pilot
ahead selecting pilot air valve