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drilling hole
auto. 钻孔
hydroel.st. 造孔
drilling hole
: 121 phrases in 13 subjects
Architecture2
Automobiles2
Bridge construction1
Drilling12
Earth sciences2
Electronics3
Engineering geology12
Explosives and Explosive Ordnance Disposal14
Hydroelectric power stations2
Mechanics1
Oil / petroleum16
Shipbuilding1
Technology53