四边形的

Record each move and record the instruction eg rotate 90 to the right.

每次移动记录指令，如：向右旋转90度）上课时，教师稍作解释，然后每个学生分发到一块积木和一张8开白纸，积木有三角形、有正方形、有长方形、有平行四边形，学生就按照白板上的要求认认真真制作了一节课。

The first SunTour Skitter was an inexpensive stamped steel parallelogram rear derailleur made in the early 1960s.

第一山图Skitter是一种廉价的冲压钢平行四边形后拨60年代初提出。

Besides, the solution of large equation set can be avoided and the computation efficiency can be increased using the algorithm for the planar parameterization of quadrilateral meshes, so it provides the basis for the reconstruction of parameterization surfaces for quadrilateral meshes.

此外，该方法避免求解大型方程组，提高了计算效率，可为构造重建四边形网格的参数曲面提供有效方法。

In order to calculate the electric field intensities of spherical electrode s in 3-D electrostatic fields precisely, the spherical surface curve quadrangular BEM based on spherical systems is put forward.

为了精确计算三维静电场中球形电极表面的电场强度，基于球坐标变换提出了球面曲边四边形边界元方法。

The handling equipment are Telescopic boom and Craner, it is expert to handle the stone-slab in container.

作业装置为两节四边形伸缩式工作臂和吊臂，专用于进集装箱石板材的吊装作业。

The two stars shining on the left-hand side of the parallelogram are Sulafat and Sheliak.

位于四边形左手边的两颗星星是Sulafat和 Sheliak。

For thecopper and silver complexes, tripodal ligands exhibit rich coordination forms, andthe coppers exhibit different geometry such as square-plan, square pyramidal, andtrigonal bipyramidally geometry.

在铜、银配合物中，三脚架配体表现出多种配位方式，铜离子有平面四边形、四方锥、三角双锥等不同的空间构型。

In this situation, the geometry shader extrudes two new triangles to create a quad to match up between the front cap of the shadow volume and the back cap.

在这种情况下，GS抽取两个新三角形生成一个四边形来匹配封顶和封底之间的Shadow Volume边界。

Can we combine two same acute-angled triangles into a parallelogram .

师：两个完全一样的锐角三角形可以拼成平行四边形吗？

seepage ; drainage hole ; air element ; finite element method ; simulation

当以有限元法做渗流场分析时，若考虑排水孔的尺寸效应，以四边形或

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。