根据工程实际的需要，层状岩石结构中的每一层岩石，均可视为均质、各向同性的弹性体。
Based on the actual needs of the engineering, every stratum of layered rock structure can be regarded as the homogeneous and isotropic elastic body.
在最后一层白垩纪岩石和第一层新生代岩石之间，常常有一层薄薄的粘土。
Between the last layer of Cretaceous rock and the first layer of Cenozoic rock, there is often a thin layer of clay.
存在于两个相连地层之间的岩石，可能在这一层是泥板岩，而在另一层中是砂岩；但存在于泥板岩或者砂岩中的化石往往都是相同的。
While rock between two consistent strata might in one place be shale and in another sandstone, the fossils in that shale or sandstone were always the same.
应用推荐