air - anti
- air-mixing chamber
- air-natural transformer
- air-oil actuator
- air-oil mist
- air-oil separator
- air-oil shock strut
- air-oil tank
- air-operated clamp
- air-operated flying shears
- air-operated gage
- air-operated grab
- air-operated hoist
- air-operated knife
- air-operated reciprocating boning knife
- air-operated stop
- air-operated valve
- air-operating hammer
- air-out
- air-over-oil actuated brake
- air-oxide isolation
- air-petrol mixture
- air-placed concrete
- air-polluting substance
- air-position indicator
- air-powered drive
- air-preparation unit
- air-pressure switch
- air-pressure test
- air-processing equipment
- air-pump governor
- air-purge drum
- air-purification machinery
- air-regulated cylinder
- air-report
- air-return system
- air-route area
- air-sand blower
- air-sand process
- air-schaft
- air-scooping nuclear-electric propulsion