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进风井 jìnfēngjǐng
earth.sc. downcast
tech. downcast shaft; inlet shaft; intake shaft
进风〔竖〕井{矿}
earth.sc. downcast shaft
【矿】进风井 jìnfēngjǐng
gen. downcast
进 风 井
: 7 phrases in 4 subjects
Earth sciences2
Explosives and Explosive Ordnance Disposal1
Refrigeration1
Technology3