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In this paper, the problem of an arbitrarily shaped planar crack which is perpendicular to the interface of bimaterial and loaded by interior normal pressure is studied by means of the method of hypersingular integral equation in three dimensional fracture mechanics.

利用三维断裂力学的超奇异积分方程方法，对双材料空间中重直于界面的平片裂纹Ⅰ型问题进行了研究。

Milk volumes are measured by means of a calibrated dipstick or, more often nowadays, by use of an automatic flow meter on the collection vehicle .

牛奶的体积可以用经校准的量尺测量，现在，更多是利用收奶运输装置上的一个自动流动计量器。

The process conditions were optimized by orthogonal test, and discomposed temperature of sulfiding agent was evaluated by means of TPR apparatus.

同时通过正交试验对硫化剂的制备条件进行了优化，并采用TPR装置评价了硫化剂的分解温度。

By means of the projection method,adding a small disturbing function to the objective function, the penalty method, andthe gradient method, this dissertation proposes several neural networks for solvingsaddle point problems and minimum radius of ball-coverings problems, and investi-gates the stability of the proposed networks by the LaSalle invariance principle andthe Lyapunov method, so as to design neural networks which avoid getting stuck inthe local minimum.

本文针对约束鞍点问题和球覆盖最小半径的计算问题，分别利用投影法、对目标函数加上很小"扰动函数"的逼近法、罚函数法和梯度法等建立神经网络模型进行求解，并基于LaSalle不变集原理和Lyapunov直接法等工具，对模型的动态特性进行研究，从而设计出避免陷入局部极小的优化计算神经网络模型。

Chapter 6, consider a coupled generalized KdV-Burgers equation. In section 6.2, we study the initial-boundary value problem in the semi-unbounded domain, the existence of global solutions and global attractors is proved by means of a uniform priori estimate for time. In section 6.3, the Cauchy problem by using the weighted space, the existence of the global attractors for a coupled generalized KdV-Burgers in an semi-unbounded domain is proved.

第六章，考虑了一类广义耦合的KdV-Burgers方程，在第二节中讨论了半无界区域上的初边值问题，证明了整体光滑解和整体吸引子的存在性；在第三节中讨论了Cauchy问题，利用加权函数和加权空间上的插值8不等式，证明了半无界区域上整体吸引子的存在性。

In chapter 2, the contents of loureirins in the roots, stems and leaves of Dracaena cochinchinenis were analyzed by HPLC. On the other hand, using the preparation chromatography technology, five compounds were isolated from the leaves of Dracaena cochinchinenis, their structures were identified by means of spectral and chemical methods. They are steroidal saponins.

第二章主要是利用HPLC技术对剑叶龙血树根、茎、叶中龙血素成分的分析与探讨，并利用制备色谱等技术对剑叶龙血树叶子组成成分进行了分析、研究，得到化合物5个，经波谱鉴定，这5个化合物均是幽体皂贰类化合物。

We have learnt two methods of transfering solutions:by pouring a solution and by means of a dropper.

我们已经学习了两种取用溶液的方法：直接倒和用滴管的方式。

By the economic analysis of the agricultural mechanization development effects in China, the paper does qualitative research into impacts of effect degree that different levels of agricultural mechanization have on the rural economy by means of edge effect analysis in regression model, and farther explanation about the impacts that agricultural mechanization have on the rural economy is indicated using the method of simulation of C-D production function model.

论文在我国农业机械化发展效应经济性分析的基础上，利用回归模型边际效应分析方法初步定量探讨了农业机械化发展水平对农村经济的作用程度影响，并运用C—D生产函数模型模拟方法对农业机械化对农村经济影响进行了进一步说明。

The model of laser welding aluminum alloy was set up by means of finite element method. The changes of surface absorptivity with different laser power were simulated by ANSYS.

中文摘要：用有限元方法建立了铝合金激光焊接模型，采用ANSYS软件模拟了铝合金激光焊接过程中铝合金表面吸收率对焊接过程的影响。

Thermal discomposing temperature was determined by DTA, and the change of structure and element composition of surface film with inhibitor after high temperature tests were studied by means of IR and XPS etc.

用DTA研究了OM-2的热分解温度。用IR和XPS等方法研究了高温试验后产物的结构变化以及成膜试片表面的元素组成。

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