Once upon a time there lived a stone-cutter who went every day to a great rock in the side of a big mountain and cut out slabs for gravestones or for houses.
从前有一位切石匠，他每天都会来到一座大山旁边的巨石前，切割下一块块的石板用以制作石碑或建造房屋。
The rock resistance to abrasion is one of the key elements which influence the degree of the cutter attrition and it has close relationship with the rock physical mechanics.
岩石的耐磨性是影响刀具磨损程度的关键因素之一，岩石耐磨性与岩石的物理力学指标以及岩石自身性质有着密切的联系。
The displacement equation of a point on the disk cutter of a full-section rock tunneler has been created and its apPlication is investigated.
建立了全断面岩石掘进机盘形滚刀刃上一点的位移方程，并探讨了其应用。
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