难点

Chapter 4 puts up the basic theory of non-linear finite element calculation methods and deduces calculation iterative formula and relevant accelerating iterative format. In the calculation of non-linear finite element, yielding element calculation is a difficult problem,"fictitious elastic stress" methods propounded in this paper puts the axe in the helve.

第四章提出了非线性随机有限元法的基本理论，并推导了计算迭代公式，为加快计算速度，提出了相应的加速迭代格式，对于基于非线性随机有限元的可靠度计算中，屈服单元的计算方法是一个难题，本文提出了"虚拟弹性应力"法，较好的解决这个难点。

This discovery will lead to open a new way for oilseed rape herbicide design.

这一研究成果突破了油菜田除草剂分子设计、研发所面临的难点，取得了创新性的结果。

Hereinto , the assembly process simulation technique was based on digital mock-up , and its application features and existing difficulties in airplane parts assembly were explained .

其中，装配过程仿真技术是以数字样机为基础的，并说明了其在飞机部段对接中的应用特点和存在的难点。

Based on unique characteristics and difficulties in manufacturing, technological process of reactive printing of high-count and high-density Tencel fabric is detailed.

针对天丝纤维得色量不高，易擦伤原纤化等加工难点，具体介绍了高支高密天丝织物的活性印花生产工艺。

Therefore under the environment of high-speed network intrusion detection system is the focus and difficult of the study.

因此高速网络环境下的入侵检测系统是目前研究的重点和难点。

In the Endless rolling technology the most difficult thing is the connection billets technical problems, that is, you need to link the high-speed steel billets in a very short time.

无头轧制技术的难点是钢坯的连接技术问题，即要在非常短的时间内将高速运动的钢坯连接起来。

Function value of the solution and apply early have higher mathematics involved, it is difficult is the key.

函数最值的解法和应用在初高等数学中都有涉及，它既是重点也是难点。

In the year of 2007, Lannuo Biotechnology has solved the difficult problems of complex technique, low extracting efficacy and high cost of Natural Hirudin.

在2007年，第三lannuo生物技术，解决了难点问题的复杂技术，低提取的有效性和成本高的天然水蛭素。

It is a notable feature of Chinese historiography.

最后，简述了本论题的重点和难点。

Homograph between Japanese and Chinese is one of the difficulties in learning Japanese.

七、结论中国人学日语，同形词一直以来都是容易被忽视的难点。

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。