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填井
dril. plug-back
earth.sc. completion
oil tamp (夯紧地震炮井)
填井
: 60 phrases in 12 subjects
Bridge construction2
Business1
Drilling4
Ecology2
Engineering geology5
Explosives and Explosive Ordnance Disposal2
General1
Geophysics2
Hydroelectric power stations2
Mining1
Oil / petroleum18
Technology20

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