查询词典 combinatorial geometry

WIMP-Based electronic teaching systems can not meet teachers' requirements of natural and efficient interaction, especially continuous drawing and writing in geometry teaching. In this paper, an intelligent pen-based whiteboard system for dynamic geometry visualization is designed and implemented.

计算机辅助教学系统目前已在教学中大量应用，然而，基于WIMP界面范式的电子课件系统，无法满足教师在课堂教学互动中需要与用户界面自然、高效、连续性交互的需求，尤其是几何教学中连续书写板书、自由勾画图形、动态几何定理演示等。

But it turns out there is a very good reason why we are crocheting it because many organisms in coral reefs have a very particular kind of structure. The frilly crinolated forms that you see in corals, and kelps, and sponges, and nudibranchs, is a form of geometry known as hyperbolic geometry.

但我们有一个很好的理由来用钩针编织：因为很多在珊瑚礁中的生物有机体，如裸鳃类动物、珊瑚礁、海藻及海绵中，有非常特别的一种结构，就是你所看到的裙衬褶边形式。

Secondly,"the Nodal Green's Function Method For Cylindrical Geometry on Neumann Boundary Condition Based on Green's Functions on slab geometry"is well improved.

论文对"基于平板几何格林函数的第二类边界条件圆柱几何格林函数节块法"做了重要改进。

The research on the improvement for the convergent quality of"the Nodal Green's Function Method For Cylindrical Geometry on Neumann Boundary Condition Based on Green's Functions on slab geometry"is an original work.

在本论文中，"基于贝塞尔函数的第二类边界条件圆柱几何格林函数节块法"在中子扩散方程求解方法研究领域中是首创的，属创新成果；关于改善"基于平板几何格林函数的第二类边界条件圆柱几何格林函数节块法"的收敛性能的研究也属创新成果。

And Monge, continuing his researches, arrived at that general method of the application of geometry to the arts of construction which is now called descriptive geometry.

而蒙日继续进行研究，发现了应用几何学到建筑设计的一般方法，也就是今天所谓的画法几何。

The Computer Aided Method on Descriptive Geometry can integrate the advantages of the two above,provides new technology in teaching descriptive geometry and drawing training.

一种意见认为，画法几何对提高学生的空间想象能力和逻辑思维能力有明显的优势，因此，应该坚持传统的画法几何教学，以培养学生的图形识别能力和表达能力。

According to the principle of the diameter of a circle corresponding to the right angle and the principle of short side for little angle in right triangle, projecting the initially-chosen point to the hyper-planes of the linear equation group in which every linear equation can be regarded as a hyper-plane and the projection points can be obtained. The initially-chosen point, and one arbitrary projection point, and the solution point are all on the surface of the relative hyper-geometry ball, therein-to, there is a projection point which is nearest to the solution point and it can be regarded as the next iterative initially-chosen point, so the solution problem of the linear equation group can be changed as an iterative problem of approaching the solution on the surface of a hyper-geometry ball.

根据直径对应的圆周角足直角以及直角三角形中短边对小角的原理进一步知道，当将初始点向线性方程组中各个方程所代表的超平面上投影得到投影点时，初始点和其任何一个投影点及方程组的解点都将位于一个相应的超球面上，其中必定存在一个投影点离问题解点的距离最短，即把该点作为下一次迭代的初始点，从而可将线性方程组求解的问题变成球面上逼近解点的迭代问题。

In classical differential geometry are important in the theory and application of guidance, in integral geometry, computer-aided geometric design and other fields also have a wide range of applications.

在经典微分几何中的有重要的理论指导和应用，在积分几何、计算机辅助几何设计等领域也有着广泛的应用。

The elegancy and singularity of fractal pictures attract the attention of more and more fractal fans.Fractality is not only used for enjoyment,but also is a new research direction of geometry which is the research on anomalous geometry objects.

分形图形的优美与玄妙吸引着越来越多的分形爱好者，它不仅仅是用来欣赏的，而且代表着几何学的一个新的研究方向，即对非规整几何对象的研究［1］。

High geometry is the extended course of elementary geometry.

高等几何是初等几何的延深课程。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044