air-air data transmission
all-air air conditioning system
plate-type air-air heat exchanger
wheel air-air enthalpy exchanger
advanced long-range air-to-air missile (ALRAAM)
advanced medium-range air-to-air missile (AMRAAM)
advanced short range air-to-air missile (ASRAAM)
AHU with air-to-air energy exchanger
air attack and air defense
air attack and counter air
air compressor air inlet tube
air cooled air conditioner
Air Cooling Heat Pump Central Air Conditioning
air cycle air conditioning