The theory of the earth

He paper raises the theory of the earth gravitational separation dynamics .

本文介绍了作者提出的重力分离地球动力理论。

However , the design theory of the reinforced earth retaining wall is not mature enough yet , especially in the dynamic characteristics and anti-seismic design .

然而，加筋土挡墙的设计理论还不够成熟，尤其是动力特性和抗震设计方面。

The nonlinear theory of the active earth pressure produced by the interaction of two media , which are composed of strain-hardening medium and strain-softening medium for the soil masses behind the retaining wall , is studied by using catastrophe theory when the wall back is vertical and smooth .

应用突变理论方法，研究当挡墙墙背竖直、光滑，且墙后土体由应变硬化介质与应变软化介质组成时，两种介质相互作用产生主动土压力的非线性理论。

Based on the dynamical theory of rotation of the earth , it is proved that the storing water in reservoir can make the earth release kinetic energy .

根据力学原理证明水库蓄水使地球释放动能，能量释放地在库区或库区邻近。

Seen from the visual angle of the theory of the system , the earth is an organic whole made of human society system and natural system , of which the destruction of any system will bring the instability of the whole ecosystem .

从系统论的视角来看，地球是由人类社会系统和自然系统构成的有机整体，其中任何一个系统的破坏都会带来整个地球生态系统的不稳定。

The critical inclination and the features of the frozen orbit are aspects of interest in the applied orbit theory of the earth satellite and these two topics have been investigated separately .

临界倾角及冻结轨道的特性是人造卫星应用轨道理论中十分有意义的问题。

The problem of the expansion and self-healing of core cracks in earth dam is a important and difficult problem in dam design . Investigating the problem is very useful to improve the designing theory of the earth rock-fill dam .

心墙裂缝的扩展和自愈合问题是目前高心墙坝设计中急需解决的关键科学问题之一，对其开展研究，有益于解决实际工程问题和进一步完善土石坝设计理论。