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孔穴 kǒngxué
gen. OS
agric. fovea
bridg.constr. vacancy; hole; cavity
met. void
岩石中的孔穴 kǒngxué
tech. bugi hole
孔穴: 49 phrases in 11 subjects
Agriculture6
Desert science1
Engineering geology5
Explosives and Explosive Ordnance Disposal2
General6
Metallurgy2
Mountaineering1
Nautical2
Oil / petroleum6
Technology17
Textile industry1