【机】 气力扬升落锤机

air jet for air jet liquids on surfaces

air regulator

wet-type air cooler【制冷】化工

air-raid warden

air break disconnecting switch

heating, cooling, ventilating or air-conditioning of SHIP(S)

by the air circulation in the air conditioning plant

air drying【木】;air seasoning【木】;natural draught【木】