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well drilling
el. 打钻; 钻进
oil 钻井
tech. 凿井
water.res. 沉井; 下井管; 打井
well-drilling
gen. 钻〔凿〕井
hydroel.st. 钻井; 凿井
well drilling
: 77 phrases in 15 subjects
Bridge construction2
Consulting1
Drilling11
Earth sciences3
Engineering geology8
General1
Hydroelectric power stations2
Metallurgy2
Nautical1
Oil / petroleum5
Oil and gas technology1
Project management1
Technology37
United Nations1
Water resources1

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