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.
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.
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.
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.
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.
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.
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