air distribution box - alluvial terrace
- air stripping
- air suction cleaning
- air supply
- air supply box
- air supply nozzle
- air supply outlet
- air supply plant
- air supply plenum
- air supply unit
- air supply volume
- air survey camera
- air suspension
- air T-antenna
- air tamper
- air temperature
- air tent
- air terminal
- air terminal device
- air termination network
- air test
- air test meter
- air thermometer
- air throw
- air tightness
- air tool
- air traffic
- air traffic control
- air traffic control tower
- air transport
- air transport factor
- air transport flow
- air transport system
- air trap
- air travel demand forecasting
- air trunk
- air tube
- air tube conveyer
- air tunnel
- air tyre
- air uptake