四边形的

The model adopts Drucker-prager ideal elastic-plastic stress-strain model, using contact pair element simulate the interface between the wall and soil, soil body use eight-nodes is parametric quadrilateral element, pile use beam element, and anchor rod use space link element.

模型采用Drucker-Prager理想弹塑性本构模型以及用接触面单元模拟了土与结构的相互作用，土体采用了八节点等参数平面四边形单元，桩采用了梁单元，锚杆采用了杆单元。

Based on the potential-hybrid/mixed finite element scheme, 4-node quadrilateral plate-bending elements MP4, MP4a and cylindrical shell element MCS4 are derived with the inclusion of splitting rotations.

本文基于势能～杂交/混合有限元格式，导出了具有分离转动变量的4节点四边形Reissner-Mindlin板元MP4、MP4a和圆柱壳元MCS4。

Polys should always be as square as possible.

多边形将尽可能的为四边形。

Then the paper at large dissertates the technology of automatically generating quadrilateral grid about five kinds of tooth profile plane models which are commonly used in the finite element analysis of transmission gear.

然后详尽论述变速器齿轮有限元分析常用的五类齿廓平面模型四边形网格自动生成技术。

Shorter stamens abortive; anthers rhomboid-ovate, usually papery, abaxially long caudate-spurred, adaxially 2-setose at base.

短雄蕊败育；卵形，通常纸质的花药平行四边形，长尾状距，正面具刚毛在基部。

All of the important SunTour rear derailleurs now had two spring-loaded pivots to go with the horizontal slant parallelograms.

山图的重要后方derailleurs大家现在有两个弹簧式支点，配合横向倾斜平行四边形。

The GSP computer-assisted instructional method is used in the former group while the traditional narrative teaching method is utilized in the latter group. The experiment is conducted for 5 weeks, and the teaching content is geometry,(the congruity of two triangles and the properties of parallelograms.) After the five weeks' experiment, a comparison of learning achievements and learning attitudes is made between the two groups. In addition, an investigation of the experimental group's learning attitude computer-assisted instructional method is made.

本实验教学为期五周，内容为国中几何课程，含两三角形全等与平行四边形，经实验教学之后，比较两组学生几何学习成就及数学学习态度之改变和针对实验组使用GSP 电脑辅助学习几何课程的态度调查，研究结果各项资料经统计处理分析之后获得下列三项主要结论

Detecting human is to search a combination of quadrangles constrained by some geometrical and topological relations.

人体检测就是寻找满足一定几何和拓扑约束的四边形组合。

Opengl examples to add two kinds of triangles and quadrilaterals of different types of coloring methods.

详细说明： opengl实例给三角形和四边形添加2种不同类型的着色方法。

In this paper, a new method for eliminating the false intersection points is proposed and refered as the quadrilaterals grouping method.

提出了一种排除无源交叉定位虚假交点的新方法，称为四边形分组法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。