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废矿 fèikuàng
gen. rough
earth.sc. abandoned mine
met. waste ore; refuse ore
tech. abandoned mine (井); abandoned pit (井); goaf; spent ore
废矿
: 115 phrases in 13 subjects
Desert science3
Earth sciences4
Ecology15
Electronics4
Engineering geology7
Environment2
Explosives and Explosive Ordnance Disposal3
General4
Hydroelectric power stations1
Metallurgy14
Oil / petroleum1
Technology56
Water resources1