air combat decision-making
Simulating air combat maneuver
Air Leakage Rate of Air Preheater
air to air heat recovery unit
air to air missile launching envelope
arctic air [= arctic air mass]
continental air [= continental air mass]
main air port exhaust air
marine air [= marine air mass
variable air volume (VAV) air conditioning system
variable air volume air conditioning system
BaYi Men basketball team
108 Geological Team Sichuan Bureau of Geology and Mineral Resources
115 geological team inner Mongolia
268 Geological Team of Eastern China