世界上大部分的饮用水——适合饮用的淡水——是由地下水提供的，它储存在岩石的孔隙和裂缝中。
Most of the world's potable water—freshwater suitable for drinking—is accounted for by groundwater, which is stored in the pores and fractures in rocks.
通常独居在岩石裂缝或岩洞中。
They generally live singly in crevices or in burrows under rocks.
攀登者必须在岩石中寻找裂缝，这些裂缝是他们手脚所能着力的地方，从而帮助他们向上攀登。
Climbers must look for cracks in the rock. They place their hands and feet in the cracks and then work their way up.
摄影师布莱恩·史盖瑞就在爱尔兰西南海岸附近的岩石裂缝中，捕捉到了这种小鱼的身影。
Photographer Brian Skerry spied this one peeking from a crevice near Ireland's southwest coast. "we found they were common off Valentia Island," he says.
充分考虑到碳酸盐岩剖面孔隙性地层和裂缝性地层中岩石抗张强度对地层破裂的影响，建立了地层破裂压力测井计算模型。
The effects that the rock tensile strength is in pore formation and the fracture formation are sufficiently considered, the formation fracture pressure is established.
最后，利用高阶的交错网格有限差分方法，我们模拟了地震波在具有随机分布裂缝岩石中的传播特征。
Numerical modeling results for seismic wave propagating in rocks with random dis- tributed fractures using a staggered high-order finite-difference (SHOFD) are also presented.
通过水中爆炸波对水泥试样的损伤破坏实验来模拟水力裂缝层内爆炸采油中激波使岩石损伤开裂的现象。
Based on the experiments of exploding on the surface of the cement sample, the phenomenon of the rock damage and fracture by shock waves in exploding was simulated.
在裂缝的定量研究中，通常需要选用一定的破裂准则来确定岩石在应力作用下裂缝形成时间以及裂缝的方向。
In the quantitative research on fracture, some principles for rock fracture are usually adopted to confirm when and in which direction the rock fractures occur under stress.
推导了岩石导电效率与岩石中孔洞大小、裂缝宽度以及导电效率与孔洞大小、喉道直径之间的关系式。
Relationships between the rock electrical conduction efficiency and the cave size, fracture width, and throat diameter are presented.
属于声波类型的一种测井方法。根据穿过裂缝的声波能量衰减来确定井眼附近岩石中裂缝的位置。
A wireline well log of the sonic type that locates fractures in the rocks adjacent to the wellbore by the attenuation of acoustic energy across the fracture.
应用边界元法模拟了两种点源产生的弹性波在二维裂缝(岩石)中的传播特性。
The properties of elastic waves excited from a two-dimensional (2d) point source propagation in 2d fractured rocks were in.
利用岩石张裂时发出的声波在岩石中的传播原理，可准确测出裂缝的形态方位和延伸长度。
Making use of the principle that the sonic wave made by the rock open fracture spread in the rock, can accurately test the crack's appearance directions and extend length.
受构造应力场及岩石物性的影响与控制，火山岩储集层中裂缝最为发育。
Research on lithology and facies of volcanic reservoirs in Qingshen gas field of north Songliao basion;
受构造应力场及岩石物性的影响与控制，火山岩储集层中裂缝最为发育。
Research on lithology and facies of volcanic reservoirs in Qingshen gas field of north Songliao basion;
应用推荐