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- There is stress concentration near borehole wall,where rock s drillability gets worse.It is explained that the side of PDC bits is easy to be damaged. 靠近井壁区域存在应力集中现象,岩石可钻性变差,这是PDC钻头外侧易损坏的原因。
- Then get the wall rock' s deformation, stress,and rockbolt' s axial stress.At the same time, analyse thedevelopment process and dispersion range of plastic region. 得到了各工况下洞室开挖后围岩的变形、应力和锚杆的轴向应力,同时分析了塑性区的发展过程和分布范围。
- The property from the microscopic view manifests mainly discontinuity and uncertainty for the rock s structure, which is difficult to express with the traditional method and the linear analysis. 这种特征在微观上主要表现为岩石结构的非连续性和不确定性,很难用传统的、基于线性分析基础之上的方法来描述。
- neptunic rock(s) 水成岩
- analysis of the host rock' s stability 围岩稳定性分析
- rock' s damage by frietion heat and mechanieal energy 热机碎
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- Many young rock hounds grow up to be geologists. 许许多多爱好收集岩石的少年,长大后成了地质学家。
- The climber had to negotiate a steep rock face. 那攀登者得攀越一陡峭岩石。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- The water had worn a channel in the rock. 水把岩石冲出了一条沟。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- He dash the glass bowl to bit on a rock. 他对著石块把玻璃碗砸得粉碎。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The mountain rise up in a steep wall of rock. 这座山高而陡,形成一道岩石屏障。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- The mountain rose up in a steep wall of rock. 这座山高而陡,形成一道岩石屏障。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- He chiseled that rock into the figure of a woman. 他把那块石头凿成一个女人像。
- The boat was sundered by the rock. 船被岩石撞碎了。