【机械工程】出气口【机械工程】排气

air-mix spraying【涂料】

pressuried cabin air-conditioning of the aircraft

feed-water heater (feed-water preheater) air preheater

air pistol adapted for underwater use

engine mass air flow meter

venting air, venting gas

air-cooled rotor

secondary air (supplementary air) detoxication of exhaust gases