画法几何

Based on the traffic flow theory and the elements of projective transform in descriptive geometry, the key to the changepoint recognition was analyzed by the complanation of dualistic linear regression.

依据交通流理论，结合画法几何中投影变换原理，以二元线性回归平面化研究为例，对变点辨识的关键问题进行了分析。

On a stage of discussing the virtual teaching reform, a new graphics education system among the Institutions of Technology has been being built up and perfected. The author demonstrated how to evaluate the position where descriptive geometry is and what function descriptive geometry plays when it comes to the changing graphics education system. The author also discussed how to use descriptive geometry to cultivate students' thinking and design capacity.

摘 要：在探讨实质性教学改革阶段，工科院校新的图学教学体系正在不断改进和完善，怎样看待画法几何课程在这个体系中的位置、价值和功能，如何利用画法几何来培养学生的思维能力和设计能力，是否认为CAD技术与画法几何没有必然联系。

The suggested one is more effective for drawing generation of questions in descriptive geometry.

这一方法有助于提高求解画法几何问题的作图效率。

Along with the spreading of computer graphics in teaching and engineering,there are two opinions about dealing with descriptive geometry.

画法几何是研究在平面上用图形表示形体和解决空间几何问题的理论和方法的学科。

Along with the spreading of computer graphics in teaching and engineering, there are two opinions about how to deal with descriptive geometry.

画法几何是研究在平面上用图形表示形体和解决空间几何问题的理论和方法的学科。

"I cannot tell you the efforts to which I was condemned to understand something of the diagrams of Descriptive Geometry, which I detest.

"，"我不能告诉你为了对画法几何图形有所理解，我付出了多大的努力，我讨厌画法几何。

After this the Euclidean and hyperbolic geometries are built up axiomatically as special cases of a more general 'descriptive geometry'.

在此之后的欧几里德和双曲几何的建立作为一个更一般的'特殊情况下，公理画法几何'。

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。

The present teaching situations of descriptive geometry and architectural drawing and challenges it confronts are briefly introduced,so that the necessity to carry out curriculum reform is discussed.

简要介绍了《画法几何及建筑制图》课程的现状和面临的挑战，论述了课程改革的必要性，并从课程内容、教学方法及教学手段、考核方式等方面论述了《画法几何及建筑制图》课程可行的教学改革方案，以提高教学质量。

All quadrilateral mesh automatic generation for regular quadric surfaces based on Auto CAD AME;2. Represent Quadric Surfaces Using NURBS and Calculate the Control Vertecs and Weights;3. Through study,the property is found out that planes cutting edgewise quadric curve and quadric intersections from the quadric surfaces become the harmonic division.

文中采用了射影几何的方法，证明了画法几何中关于两个二次曲面相交的著名的复切定理和蒙日定理，通过研究得出了周切线平面和交线平面成调和分割的性质，同时还得出了处于复切的二次曲面必存在相公切的二次曲面的性

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。