condensation of air opening
Pressure of air opening
Accounting Information Inside And Outside Causes Supervision System Outside Supervision
outside heat preservation outside the wall
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
variable air volume (VAV) air conditioning system
variable air volume air conditioning system