Elevator Control System
air traffic control system
空中交通控制系统
空管系统
空中交通管制系统
空管自动化系统
Air Route Traffic Control System
air pollution control system
Air Leakage Control System
Air cooler control system
Air Conditioning Control System
aeronautic fire control system
Aeroengine variable geometry control system
Aerial Fire Control System
aeration control system
advanced traffic control System
Advanced Surface Movement Guidance and Control System