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岩心钻
bridg.constr. rock core drill; rock core bit
water.res. core drill
岩 心 钻: 64 phrases in 17 subjects
Architecture2
Bridge construction3
Coal1
Construction2
Desert science1
Drilling3
Earth sciences8
Electronics3
Engineering geology1
Explosives and Explosive Ordnance Disposal3
General8
Hydroelectric power stations6
Metallurgy6
Mining1
Oil / petroleum6
Technology8
Water resources2

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