In general, the composition of lower crust is close to basalt and the composition of upper crust is similar to granite.
一般来说，下地壳的成分接近于玄武岩，而上地壳的物质成分与花岗岩相似。
as a matter of fact, there are two distinct kinds of crust in reference to the composition and physical properties. One is the continental crust and the other is the oceanic crust.
事实上，地球上有着两种在成分上和物理性质上明显不同的地壳．一种是陆壳，另一种是洋壳。
The deformations at the surface of the crust after rainfalls have close relations to the occurrence of shallow shocks in the upper crust.
雨后地壳表面的形变与地壳上部发生的浅源地震密切相关。
as the basic form of the crust of the earth,
看作地壳的基本模壳，
A large upward fold of the earth's crust.
大背斜层一种巨大的地壳上弯钩
The Best Choice of State-owned Real Estate Enterprises--Buying Shell for the Listing;
国有房地产企业的最佳选择——买壳上市
Applications of Seismic Surface Waves in the Study of Structures of the Crust and Upper Mantle (An Overview)
地震面波在研究地壳上地幔构造中的应用(综述)
PRIMARY STUDY OF CRUSTAL AND UPPER MANTLE VELOCITY STRUCTURE OF SICHUAN PROVINCE
四川地区地壳上地幔速度结构的初步研究
The spectrum of life on Earth from the crust into the lower atmosphere.
地球上从地壳到大气内层之间有生命的范围。
A Seismic Tomography Study on Crust and Upper-mantle Structure Beneath the North-South Zone in China;
南北带地壳上地幔结构的层析成像研究
The snow has crusted over.
雪在地上结成冰壳。
There are extremely plentiful resources of magnesium on the earth& in the sea.
全球地壳上和海洋中具有极其丰富的镁资源。
Nonlinear Bending of Shallow spherical Shells on the Pasternak Foundations
双参数弹性地基上圆底扁球壳的非线性弯曲
Like the earth, the moon is in layers, with a crust on the outside and a deep mantle below.
如同地球一样，月球上有地层，表面是一层地壳，其下是很深的地幔。
The results show that the crust and upper mantle structures present obvious lateral and vertical inhomogeneity.
结果表明,地壳上地幔结构在纵向和横向上具有明显的不均匀性.
The middle and lower crust of upper mantle rising area is silpping towards the root of mountain around and is becoming thiner.
上地幔隆起区的中、地壳向周围山根地带拆离下滑而减薄。
Seismic converted wave is one of methods of explorating earth crust and upper mantle.
地震转换波法是探测地壳与上地幔构造的方法之一.
The Seismic Tomography on the Velocity Structure of the Crust and Upper Mantle in the Northeastern Margin of the Qinghai-Tibetn Plateau
青藏高原东北缘地壳上地幔速度结构的地震层析成像研究