探讨了一种利用平面迹线和几何作图法，作无灭光线下透视阴影的新方法。
This paper presents a new method of drawing perspective shade and shadow in parallel rays, which makes use of plane trace and geometrical drawing method.
对过椭圆外一定点的法线作图问题作了探讨，指出了几何作图法的不可解性。
This paper discusses the graphic problem of ellipse normal through a point outside the ellipse. Concluded are the unsolvability of geometric graphic method to solve this problem .
本文从互为对偶的电网络的线图矩阵间关系的分析，得出求作对偶电网络的矩阵法。它异于常用的几何作图法。
After analyzing the relations between graph matrices of dual electrical network a method of plotting the latter which is different from usual geometrically drawing method is presented in this paper.
变方向折线剖面是在地形、地质情况较为复杂地区普遍采用的实测地质剖面方法。其地质剖面图目前一般用几何作图方法以投影法成图。
The construction of the direction changing section is a method of measuring a geological section applied commonly in areas with complex topographic and geological condition.
组合体的投影作图，一直是学生在学习画法几何和工程制图当中的一大问题。
The projection drawing of assembly has been a big headache for stu dents when learning techniques of geometry drawing and engineering drawing.
对弯斜桥的几何设计，传统的方法是先计算再作图不但费工费力且易出错。
For the geometrical design of curved skew bridge the traditional method is to first calculate, then make the drawings.
用圆弧投射法解决圆锥曲线与其它空间几何要素的相互位置问题，可使作图更为简练、精确。
By using circular arc project, the relative positions of the conic curves and other spatial geometrical elements can be solved for simplified and precise drawings.
本文介绍了线性定常系统稳定性几何判据的原理及其计算机作图的实现。
This paper introduces the principle of geometric justification of stability in a linear ordinary system and realization of computer graphing.
提出了一种直观、高效地用于概念设计作图的徒手输入、进行几何变形的方法。
The primary objective of this research is to develop an efficient and intuitive deformation tool for conceptual freeform geometric modeling by sketching input.
并阐述了这两种作图方法的画法几何理论依据。
Finally the paper expounded on the basis of the theory of descriptive geometry about two ways.
它不仅对解决有关旋转抛物面交线的作图问题提供了很大的方便，同时还能解决一些用画法几何的一般作图法所不能解决的作图问题。
This new method not only is convenient to solve the graphy of intersecting curve of paraboloid of revolution, but also can solve some graphic problems which can not be …
它不仅对解决有关旋转抛物面交线的作图问题提供了很大的方便，同时还能解决一些用画法几何的一般作图法所不能解决的作图问题。
This new method not only is convenient to solve the graphy of intersecting curve of paraboloid of revolution, but also can solve some graphic problems which can not be …
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