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- impermeable rock stratum 不透水岩层
- A horizontal dislocation, as of a rock stratum, at a fault. 水平断层不正常的岩层水平变位或断错
- A horizontal dislocation,as of a rock stratum,at a fault. 水平断层不正常的岩层水平变位或断错
- To lie at an angle to the horizontal plane, as a rock stratum or vein. 下沉从地平线下降，如岩石层或岩脉
- Oil is usually found in porous rock under a layer of impermeable rock which prevents it from escaping. 石油通常存在于多孔性的岩石中，上面覆盖着不可渗透的岩层，使石油不致散失。
- An aquifer is a water-bearing rock stratum such as sandstone and chalk. 地下蓄水层是一些有水的岩石层, 如沙岩和白垩岩。
- Water cannot easily flow in these impermeable rocks. 水不容易流进那些不透水的岩石。
- The downward inclination of a rock stratum or vein in reference to the plane of the horizon. 下沉矿层或岩石相对水平面的向下倾斜。
- To expose(rock strata)by erosion. 剥蚀因腐蚀而露出（石层）
- To expose(rock strata) by erosion. 剥蚀因腐蚀而露出（石层）
- Vertical stress makes rock stratum reforming voussoir beam, horizontal in-situ stress is the main source to cause the voussoir beam crushed. 竖直方向地应力使顶板岩层形成铰接拱结构，水平地应力是拱铰压碎的主要力源。
- One of the crucial elements influencing the rock burst is the structure of roof rock stratum, especially the flinty and thick sandstone roof over the coal seam. 顶板岩层结构,特别是煤层上方坚硬、厚层砂岩顶板是影响冲击矿压发生的主要因素之一。
- For the unique hard water in Dunhuang that permeates along slender crevices, there is not a single opening which it does not enter. Any soluble substance in the rock stratum will be solved and carried away in all directions. 敦煌独特的硬水，顺着细小的缝隙无孔不入地渗透，再把岩层中的可溶性成分溶解后四处搬运。
- For the unique hard water in Dunhuang that permeates along slender crevices,there is not a single opening which it does not enter. Any soluble substance in the rock stratum will be solved and carried away in all directions. 敦煌独特的硬水，顺着细小的缝隙无孔不入地渗透，再把岩层中的可溶性成分溶解后四处搬运。
- The rock mass structure can be expressed by rock stratum effect thickness influence coefficient. It is more scientific then using roof rock and sand content in the study of coal seam gas preservation. 研究表明,煤层围岩岩体结构控制了煤层瓦斯的赋存,岩体结构可用岩层效应厚度影响系数来表示,应用这一参数研究煤层瓦斯赋存比用煤层顶板岩性及含砂率更科学。
- This paper introduces four kinds of mehtods that is used to investigate crack in underground rock stratum: borehole core method, ultrasonic imaging method, borehole television method, and borehole discharge well logging method. 摘要本文介绍了地下岩层裂隙的4种勘察研究方法：钻孔岩芯法、超声成像法、钻孔电视法、钻孔流量测井法。
- The conclusion is that regional environmental hydra-geochemical field exists, and water saturated rock stratum characters and structure decide the direction for nitrogen transformation. 结论区域水文地球化学场与饱水岩层的若性和结构对氮转化的方向有决定作用。
- Comparing with thermoluminescence charactar of different volcanic rocks section, we will confirm eruptible stage to contrast in volcanic rocks stratum. 对不同剖面火山岩的热释光特征进行比较,可能确定其喷发期次而进行火山岩地层的对比。
- The occurrence of rock burst not only need a great deal of elastic energy gathering in the coal seam and the around rock stratum, but also the external energy released by the main key stratum break. 冲击矿压的发生需要煤层及其周围岩层中聚集大量的弹性能外，还需要主关键层破裂等释放的外部能量；
