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hard rock ['hɑ:d'rɔk]
bridg.constr. 坚石; 硬岩; 硬质岩
dril. 硬岩层指变质岩或岩浆岩
eng.geol. 坚硬岩石
expl. 坚硬岩石干抗压强度高于 80MPa,软化系数大于0.8的岩石
hydroel.st. 坚硬岩
oil 硬岩石 (纵波速度大于2500m/s)
tech. 硬质岩石; 硬岩石; 硬石岩; 坚岩
hard rock: 73 phrases in 15 subjects
Architecture2
Bridge construction1
Dermatology1
Desert science1
Drilling6
Earth sciences3
Engineering geology1
Explosives and Explosive Ordnance Disposal3
Football2
Hydroelectric power stations2
Oil / petroleum3
Rail transport1
Soil science1
Technology45
Textile industry1

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