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下井 xiàjǐng
dril.	down-the-hole
仪器下井 xiàjǐng
dril.	run in hole
已下井 xiàjǐng
mining.	went in hole

下井: 904 phrases in 31 subjects

Agriculture	1
Architecture	3
Aviation	1
Bridge construction	9
Business	1
China	5
Company name	1
Construction	2
Desert science	1
Drilling	153
Earth sciences	18
Economy	1
Electronics	6
Engineering geology	16
Explosives and Explosive Ordnance Disposal	17
General	18
Geophysics	74
Hydroelectric power stations	5
Labor law	1
Life sciences	1
Mechanics	7
Military	1
Mineral processing	1
Mining	50
Nautical	2
Navigation	10
Oil / petroleum	269
Space	17
Technology	210
United Nations	1
Water resources	2