adjustable air capacitor
compressed air capacitor
variable air volume (VAV) air conditioning system
variable air volume air conditioning system
variable air volume air-conditioning
variable air volume control
Variable Air Volume System
compression variable capacitor
concentric variable capacitor
Air Leakage Rate of Air Preheater
air to air heat recovery unit
air to air missile launching envelope
arctic air [= arctic air mass]
continental air [= continental air mass]
main air port exhaust air
marine air [= marine air mass