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岩石孔隙
gen. blowhole
dril. rock pore
岩石〔中充满水和气的〕孔隙
earth.sc. bags
岩石 孔隙: 18 phrases in 6 subjects
Drilling2
Earth sciences1
Explosives and Explosive Ordnance Disposal2
Geophysics6
Oil / petroleum1
Technology6