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Concludedly, it is pointed out that geotectonic is deeply influencing the erosion rule and is the decisive factor of desertification and lack of water in Huanghe River Valley in Shaanxi Province.(5) Based on the Theory of Dissipative Structure and the Hypothesis of Wavy Mosaic Structure, the coupling relation between eco-environment and geotectonics is theoretically discussed, and the main points are: i Degree of the order of eco-environment is higher in tectonic wave-dense belt than in tectonic wave-scatted belt.

系统研究了陕西生态环境特征和问题分析了陕西生态环境特征及陕西水土流失、沙质荒漠化、资源性缺水、主要生态系统生态功能降低等生态环境问题，运用替代市场价值法等方法估算了陕西环境问题所造成的经济损失，并估算了现阶段各种生态环境造成的经济损失，经分析认为陕西的生态环境使省域生态环境受到严重威胁，也影响着华北平原等周边地区的生态安全。

With signal processed by computer, the glueyness of an aluminium alloy bicycle frame is investigaed experimentally and theoretically about whether the vibration monitoring technique is feasible.

本文应用电子计算机和振动信号分析处理技术，从理论和试验两方面研究了铝合金自行车车架胶接质量振动检测的可能性。

Theoretically, however, the gyroscopic compass is very good for keeping direction by night and in smoke or fog.

然而从理论上讲，回转定位罗盘在夜间、烟或者雾中保持方向是很有用的。

The harmonical influence due to the HVDC transmission lines on the AC line protection s using of different principles was analyzed theoretically and experimently.

由于三峡工程将把大容量的高压直流输电系统与交流电网连接起来，形成交直流混合运行的电网，这样运行的电网使得靠近换流站的交流线路保护将受到高压直流输电的强烈干扰。

Theoretically,it is basically concerned about the evaluation if the role of downward and headward silt-clearing.

对于研究河道发育史和老年期河道的特点，以及在治河上均有重要的理论和现实意义

ABSTRACT In this paper, homonuclear rare gas ionic excimer-Ar〓 was studied and promoted both theoretically and experimentally.

本文对同核稀有气体Ar〓离子准分子进行了深入的理论和实验研究，取得了新进展。

The 1,3-dipolar cycloaddition reactions of various substituted ynamines with hydrazoic acid were theoretically investigated with the high-accuracy CBS-QB3 method.

采用高精度CBS-QB3方法对一系列取代炔胺与叠氮酸之间的1，3环加成反应进行了理论研究。

The hydrogeological meaning of response matrix are discussed theoretically and the two methods of generating response matrix with numerical model are introduced.

从理论上探讨了响应矩阵的水文地质意义，介绍了用数值模型计算响应矩阵的两种方法。

Consequently, the enzymatic hydrolyzable P may contribute to the internal loading of the eutrophic lake, and stratification of kinetics and compositions of phosphatase in shallow lake is theoretically noticeable.

因此，富营养湖泊沉积物中磷的&内负荷&应有可酶解有机磷的含义，浅水湖泊中磷酸酶的活性组成和动力学参数的分层现象当为湖沼学研究中值得深入探讨的新理论问题。

Theoretically, its calculation complexity is studied, while it is tested empirically by learning multi-samples generated randomly. The comparative analysis and applications show it has some merits of rapid searching and good clustering effect. B3. An immune network optimization algorithm with information feedback, which can solve special complex function optimization problems with high dimensions which objective functions are formed by summing multi-subobjective ones, is constructed based on the clone selection principle and the immune network regulation of the idiotype immune network.

为了对免疫系统中抗体如何学习抗原特征的整体行为有一定的认识，从单个抗体识别抗原及多个抗体并行识别抗原的特征出发，利用免疫应答的相关原理及免疫细胞的免疫功能设计了适合于批量样本聚类的抗原特征学习算法，理论上分析了其计算复杂度，获得了此算法中的关键参数与其搜索性能的关系；应用上，该算法通过对实际的多样本学习，获得了搜索速度快及聚类效果好的优点，比较分析表明这种方法是可行的和有效的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐