缺乏复杂性的

In China,more and more constructions in cold regions appear,Strength and deformationof frozen soil,characteristics of frost heave and thaw collapse have become the major task forcold regional construction.But researches on mechanism of frost heaving are still not maturedowing to complexity of frozen soil,and the current study,thinking little of the freezing andthawing process,mostly focuses on the different physical and mechanical properties betweenfrozen soil and thawed soil.

随着我国寒区工程建设项目的增多，冻土的强度与变形问题以及冻胀融沉特性研究成为面临的最重要任务，但是由于冻土的复杂性，现有的冻胀机理相关研究尚不成熟，大多还是研究已冻土和融土物理力学性质差别，缺乏对正冻正融过程的相关研究。

Nevertheless, on one hand,there are no appropriate models or description for movement of fish in current research areafor graphics, on the other hand, the complexity of the physical computation on movement offish often leads to serious performance degradation which cannot be adapted to thoseapplication areas sensitive to time.

然而一方面图形领域中对于鱼类运动缺乏比较合适的描述和建模，另一方面物理计算的复杂性往往带来性能的严重损失，满足不了许多对时间要求较高的应用领域的需求，因此如何在视觉误差范围内对其计算处理进行加速就显得尤为重要。

This means that studying the theory, method and computer supporting technique in this phase is very likely to lead to significant betterment of design practice. However, the literatures focus their interests at some points or sub-procedures of the whole design process due to the broadness and complexity of conceptual design itself.

由于概念设计自身的广度和复杂性，有关计算机辅助概念设计的研究目前仍停留在概念设计过程某一局部阶段或子过程模型的研究与方法探讨上，缺乏对机械产品创新整个概念设计过程的研究和把握。

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