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组合井
eng.geol. combination well
tech. compound well (各高程直径不同); gang of wells
组合井各高程直径不同
water.res. compound well
组合 井: 72 phrases in 6 subjects
Drilling22
Earth sciences2
Explosives and Explosive Ordnance Disposal3
Geophysics16
Mechanics1
Oil / petroleum28

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