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In this paper, the history and the current situation of studies on piles in calcareous sands are systematically summarized, and the reason for low bearing capacity of piles in calcareous soil s is analysed.

系统综述了钙质砂中桩基工程研究的历史和现状，分析了钙质砂的低桩基承载力的原因，提出今后重点研究方向。

The supported catalyst was systematically optimized with respect to catalyst dosage and calcination temperature.

实验了催化剂的负载量和煅烧温度对催化剂活性的影响。

Systematically analysing the method on the failure approach of patten recognition of the flood control hydro-project system, combining the social economical efficiency of the flood control system"s invalidation losses, the paper provides the concept "flood disaster risk " and constitutes the failure analysis approach of patten recognition system on the base of the flood progress. Combining with the subsystem functions and the failure probabilistic analysis of the hydro structure, the paper discusses the main failure approach of patten recognition and calculus of failure probability, calculates flood control hydro-project"s total risk.

3系统分析了防洪工程系统失效模式识别的方法，结合防洪抗灾系统失效损失的社会经济性，引入洪灾风险概念，建立了基于洪水过程的系统失效模式识别体系，结合各水工结构子系统功能和失效概率分析，讨论了主要失效模式识别和失效概率计算，对防洪工程系统总风险进行了计算。

Based on intensive investigation of original sources and research literatures on the subject in consideration,and under the paradigm why mathematics was done in the history of mathematics,the dissertation studies systematically the origin and invention of the calculus of variations by means of source analysis and comparative argumentation.

变分法是研究泛函极值的数学分支，它不仅与数学中众多分支联系紧密，而且也为物理学提供了重要的原理，同时又有着十分广泛的应用，凶此，对其历史进行研究，具有极为重要的理论价值和现实意义。

The article is mainly on the origin and developm ent of Group Callisthenics,it analyses systematically the characteristics of Group Callisthenics of different period from the aspect of logic.

以团体操的产生、发展为出发点，从逻辑学的角度系统地分析了不同时期团体操的本质特征。

This dissertation presents a systematically study of the silicon capacitive microphone and the peripheral circuit, including design, fabrication and measurement.

本论文主要工作包括硅基电容式微传声器及其外围电路的研制以及器件与电路的性能测试分析。

Koch systematically investigated the efficacy of chemical disinfectants demonstrating that carbolic acid used by Lister in aseptic surgery was merely bacteriostatic and not bactericidal.

科赫系统地研究了化学消毒剂的效力，从而说明Lister在无菌手术中使用的石炭酸只是抑菌剂而不是灭菌剂。

This thesis systematically researches the deformation features of Permo— Carboniferous systems in Bohai Bay Basin.

本文系统深入地研究了渤海湾盆地石炭—二叠系构造变形特征，在详细编图分析的基础上，按层次和时段对其进行构造恢复，探索其构造演化。。。

In this paper, the carbonization technology and surface modification were studied systematically.

本文对其碳化法制备工艺及表面改性进行了较为系统的研究。

The effects of the length of alkyl-chain,the polar group and the number of carboxyl group on rust-inhibiting properties and solubility were investigated in systematically.

合成并研究了水溶性有机羧酸醇铵盐类防锈剂，系统地考察了烷链的长度、极性基团、羧基的个数对防锈性能和溶解度的影响。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。