- air dynamics
- air-earth current
- AIREBO potential
- AIREBO势
- Airef and Synime
- air electrode
- air emergency medical service
- air entraining agent
- aireraft corrosion test
- air express hub
- air express transportation
- air extraction equipment
- air fiber separation
- airfield area
- airfield area capacity
- airfield capacity analysis
- airfield drainage system
- airfield earthwork
- airfield pavement panel
- airfield runway survey
- airfield service driveway
- airfield support buildings
- airfield support for flight test
- air filter
- air filter medium