相交

In chapter 4, basing theories and methods of scientific visualization, and artificial neural network BP algorithm, we integrate the Visual C++, OpenGL graphics library and Excel VBA technique to develop the program of artificial neural network and to make the BP algorithm visually, this program works can be divided into four parts: Using C language to develop program about BP algorithm; Using Visual C++, develop the GUI Interface, make input parameter visually; Using OpenGL graphic technique to display the training sample point in three dimension; at last using Excel DDE technique display the error graphic tables in Excel system In chapter 5, on the view of engineering application, we establish new method of surface reconstruction basing artificial neural network, develop interface program between module and commercial CAD/CAM system, meantime deeply discuss some key problems, for example, setting up the base plane, using the API technique, cutting and editing surface boundary, and also discuss the more compliant problem: how to intersect surface, at end we finish the work of translation from our surface reconstruction module to commercial CAD/CAM system, then make reverse engineering system basing artificial neural network more useful.

第四章基于科学计算可视化理论，依据人工神经网络BP算法理论模型，综合Visual C++，OpenGL图形库以及Excel VBA等多项软件开发技术，编制了人工神经网络程序，实现了BP算法的可视化映射。具体工作分为四部分：利用C语言实现人工神经网络BP算法；利用VisualC++的GUI技术开发图形用户界面，实现参数设置可视化；利用OpenGL图形技术进行三维映射，显示学习样本及训练样本点；利用微软电子表格DDE动态数据交换技术，在Excel上动态显示学习误差曲线图。第五章从工程应用的角度出发，提出了一种新的基于人工神经网络算法的曲面裁剪重构方法，完成了曲面重建模块与通用CAD/CAM系统的接口设计工作，对其中的若干关键问题进行了深入讨论，例如基平面设定、API技术的应用、边界裁剪等问题，同时，对曲面计算中较为困难的曲面相交问题也进行的专门探讨，最终完成了曲面重建模块向CAD/CAM系统的数据传输工作，使人工神经网络逆向工程系统趋向实用。

Up to a certain sum of the interior angles on one side of the transversal the two lines might indeed meet.

截线一侧两内角到达一定的和数，两直线可能一定相交。

Roller outer surface of the bus is basically a straight line, and with the roller axis line intersecting, usually truncated cone.

滚子外表面的母线基本上是直线，并与滚子轴心线相交，一般为截圆锥体。

In Degas creative life time he keeps on searching new concept in painting, most ...更多important faith for him in painting is lines. He uses multi-layered approach to drawing, which at times resembles the preparation, underpainting and glazing of a traditional oil-painting.

创作中德加还不断的探索更新的绘画技术和技巧，一向重视线条的他不满足于铅笔的黑白线条，他在后期作品中使用大量的色粉笔为画材，如同油画一样反复的色彩线条相交创造出深浅调子和轮廓轻重粗细的层次变化。

Report selector: The box where the rulers meet in the upper-left corner of a report in Design view.

报表选择器：一个框，在"设计"视图中与标尺在报表的左上角相交。

The knowledge of vanishing point is an important step for oncoming camera self-calibration and 3D reconstruction. Under perspective projection, lines paralleling each other in space will converge to a point called the vanishing point in the image plane.

在人造建筑物的图像中，存在着许多空间上相互平行的直线，这些直线经过透视投影后将在成像平面上相交于一点，称为消隐点。

The book review first vector and matrix algebra, the basic concepts and then described in detail geometry involved in a variety of two-dimensional graphics and three-dimensional geometric measurement of the object, the intersection of various algorithms and other issues, and provides information on the theme of a large number of computational geometry materials in order to facilitate quick reference.

全书先复习了向量和矩阵代数的基本概念，而后详细地描述了图形几何学涉及的各种二维和三维对象的几何测量、相交等问题的各种算法，并提供了关于计算几何学主题的大量材料以便于快速参考。

Position and adjacent to two vertical plane surfaces meeting at a 90 ° angle, so as to

当玩具放在地板上任何位置，且靠在模拟房间的角落的两个相交为90 度角的垂直面时，通

According to this character, bounding volume hierarchies was optimized by utilising spatiotemporal correlation of object motion in virtual environment.

在基于层次包围盒碰撞检测算法中，参与相交测试的包围盒的数目会直接影响到碰撞检测的速度。

The Tree that Owns Itself is a large white oak at the corner of Dearing and Finley Streets.

这条街来回双车道，在经过小山包顶，和另一条街相交的地方，有一棵参天大树，一棵老橡树，长在路边。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。