GAELIC IN THE NEW SCOTLAND: POLITICS, RHETORIC AND PUBLIC DISCOURSE



Experimental study on mesoscopic damage and fragmentation characteristics of hard rock under repeated particle impacts

Particle impact, a new drilling technology, has been applied in drilling and gas and oil exploitation.Also, it is considerably promising as an assisting rock-breaking method for the excavation of tunnels in extremely hard rocks.In this paper, an experimental study was conducted to investigate the effects of particle impact number, particle strength

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