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空气交换 kōngqì jiāohuàn
met. air interchange
space air exchange
tech. exchange of air; interchange of air
客厢空气交换 kōngqì jiāohuàn
auto. air exchange
空气 交换: 24 phrases in 12 subjects
Agriculture1
Animal husbandry2
Aviation5
Earth sciences1
Electric machinery2
Electronics1
Explosives and Explosive Ordnance Disposal1
Refrigeration2
Shipbuilding2
Space3
Technology3
Wind Energy1