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油井油
earth.sc. oil in hole
油井油
: 713 phrases in 27 subjects
Automobiles7
Aviation2
Business11
Chemistry4
Company name6
Construction3
Drilling64
Earth sciences21
Economy8
Electronics1
Engineering geology10
Explosives and Explosive Ordnance Disposal7
General28
Geology13
Geophysics24
Management1
Mechanics5
Metallurgy9
Mining60
Nautical3
Navigation11
Oil / petroleum214
Oil and gas1
Oil and gas technology2
Project management1
Steel production1
Technology196