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坚硬岩石 jiānyìng yánshí
eng.geol. hard rock; sound rock; strong rock
hydroel.st. sound bedrock
tech. hard stone; solid rock
坚硬岩石干抗压强度高于 80MPa,软化系数大于0.8的岩石 jiānyìng yánshí
expl. hard rock
坚硬岩石
: 20 phrases in 6 subjects
Architecture1
Drilling1
Explosives and Explosive Ordnance Disposal4
General1
Oil / petroleum1
Technology12

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