agro - anth
- agro-silvo-pastoral
- agroforestal
- agroforestry
- aim of tending
- air blade
- air blade coater
- air bleed press
- air blowing oil
- air cap-type headbox
- air clamp
- air coating
- air deckle
- air dog
- air drainage
- air drilling
- air dry metric ton
- air dry timber
- air dry ton
- air entrainment
- air excess safety
- air float pulp drying
- air foam rubber
- air fraction
- air jet
- air knife
- air knife coating machine
- air layering
- air loaded pressure headbox
- air make-up unit
- air pore
- air porosity
- air removing roll
- air resistence tester
- air roll
- air scoop
- air seasoning
- air seeder
- air suspension
- air yarder
- air-blast system
