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The main research contents are stated asfollow: 1. Simplified analysis method of space grids structuresDouble-layer space grids have been assumed as sandwich plate, and are analyzed bythe nontraditional theory of plate with consideration of shear deformation and threegeneralized displacements. Using the theory of energy variation, simplified methodsfor bending, stability and vibration analysis of double-layer space grids have been putforward based upon the idea of split rigidity. The formulas for calculating internalforces, displacements, critical load and natural frequency have been given out. Set thestable cables and bearing cables in hyperbolic paraboloid cable nets are all replaced bytruss-cable to form truss-cable nets structures. Natural vibration analysis method fortruss-cable nets structures has been put forward using the energy variation method andRayleigh method.

主要内容包括： 1、空间网格结构静动力简化分析方法把网架结构简化为夹层板，采用考虑剪切变形的具有三个广义位移的平板弯曲理论进行分析，基于分解刚度思想利用能量变分原理提出了网架结构弯曲、稳定与振动分析的简化计算方法，给出了位移、内力、屈曲临界荷载和固有频率的计算公式；将双曲抛物面索网中的稳定索与承重索均用劲性索代替形成劲性索网结构，基于能量变分法和Rayleigh法给出了劲性索网结构固有振动分析的简化计算公式。

An experimental apparatus of the formation of natural gas hydrate formed from ice-water-gas was designed . The preliminary experiments of natural gas hydrate formed from ice-water-gas under ice point were studied.

设计了冰水气生成天然气水合物的实验装置，并对冰水气在冰点以下生成的天然气水合物进行了初步实验，得出了在冰点以下关于天然气水合物的生成条件、生成速率等方面的结论。

Drug, some can be natural to acquire, if opium be the fruit of 罂粟 which passes to incise immaturity but withdraw directly of a kind of natural ware, but the method that can synthesize through a chemistry of overwhelming majority drug obtain.

毒品，有些是可以天然获得的，如鸦片就是通过切割未成熟的罂粟果而直接提取的一种天然制品，但绝大部分毒品只能通过化学合成的方法取得。

since 1905 modern physics began leave the law of "two indestructibility", though it can be reply seem puzzle, but let basic theory sink into error region yet, hence arise new puzzle, now urgently base on respect to natural law and serious analysis "return to the right way", to recover proper position of these two natural laws.

提要 现代物理学自1905年开始离开了"两个不灭"规律，虽然回答了几道难题，但也基础使理论陷入误域，于是出现了新的难题，当今，亟宜在尊重自然规律和认真分析的基础上"重归正道"，恢复这两条自然规律的应有地位。

Then on the basis of western existential, we analyze definite meaning of the existential, explore the existential philosophy of the traditional philosophy plight of abandoned and beyond. Basing on this demonstration of the praxis category with the existential meaning. Marx pointed out in the innateness of human, natural fact, the natural state of survival reached the general attention, existential significance of praxis can be fully reflected. And explained that Marxist philosophy in the modern existential philosophy of the founders position.

之后以西方生存论为基础对生存论的内涵进行了分析和界定，探讨了生存论哲学对传统哲学理论困境的扬弃与超越，在此基础上通过考察马克思在对人的本然、实然、应然的生存状态的总体性关注中所体现的实践范畴所具有的生存论意蕴，并说明了马克思哲学在现代生存论哲学中的奠基性地位。

The electrical properties of natural rubber natural rubber non-polar substances, is a good insulating material.

天然橡胶手轮的电性能天然橡胶手轮是非极性物质，是一种较好的绝缘材料。

Now the humanity faces the population growth rapidly, the natural resource short, the environmental pollution is being serious and so on the question, the humanity intemperately develops the use natural resource, creates the crisis for own survival environment.

当今人类面临着人口增长迅速、自然资源短缺、环境污染严重等问题，人类无节制地开发利用自然资源，给自身生存环境造成危机。

Natural Dao method means that the humankind makes the Dao entity and the De entity interact and interfuse with each other with the awakened wisdom of humanity, that and it should attain to the state of natural operation.

道法自然的含义就是：人类以人性觉醒的智慧使道实体与德实体互动互化，其运化方式要达到自然运化的状态。

This paper introduces the ore drawing process with the natural caving method and the characteristics of each stage, expounds the flow of the ore drawing management with the natural caving method , and probes into some measures that should be adopted in the special condition to reduce the interfusion of waste rock.

介绍了自然崩落法的放矿过程及各阶段的特点，阐述了自然崩落法放矿管理流程，探讨了在特殊条件下应采取的特殊措施，以减少废石的混入。

Through the economic analysis of natural resource utilization,it is believed that market is effective to solve the problem of natural resourcesustainable utilization within a generation, but it is null for the problem ofnatural resource sustainable intergeneration utilization.

首先，通过对不可再生资源和可再生资源持续利用问题的经济分析，认为市场在解决自然资源的代内持续利用问题时是有效的，但是对于解决跨代问题，尤其是可持续发展所要求的久远时限内的自然资源的持续利用问题，却是无效的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。