The stress boundary constitutes an important factor in drawing curved surface parts.
曲面零件拉深成形中，应力分界圆是非常重要的因素。
Drawing a straight line on a piece of stone and make the surface curved naturally on one side, the curved surface sprawl across the other three edges.
在一块石板上刻画一条直线，在线的一侧做成起伏不定的自然曲面，曲面向另外三边自由蔓延。
A curved surface shell hot drawing was simulateel by finite element method and forming trial was condncted.
采用有限元法模拟曲面壳体热拉深成形，并进行成形工艺试验，其模拟结果与试验结果一致。
The die was curved surface held down. The position of drawing rib was determined according to the analysis on the wrinkling trend of sheet bar made by DYNAFORM software.
此模具的压料面为曲面压边，并利用DYNAFORM分析板料的起皱趋势，确定拉伸筋的位置。
This paper studied on free curved surface reconstruction of hand-drawing with reverse technology and "point-surface" CAD model reconstruction.
采用逆向技术路线，通过“点-面”的CAD模型重构过程对不能或不便用CAD功能来表达的手绘图案自由曲面重构进行了研究。
A new analytics of calculating the projection on a curved surface by means of computer-aided drawing skill is presented in this paper.
本文介绍了曲面上投影的计算方法，用计算机绘图技术作为实现这种方法的工具。由此得到一种新的投影视图——映射投影图。
Earth is an ellipsoid and its surface is curved, but the maps are usually drawn to the floor plan on paper. So before drawing you must spread the curved surface surface to the plane first.
地球椭球体表面是曲面，而地图通常要绘制在平面图纸上，因此制图时首先要把曲面展为平面。
Master CAD drawing, knowledge chart, the 3 d modeling, curved surface has the certain basis;
熟练掌握CAD制图、识图，对三维建模、曲面有一定的基础；
Master CAD drawing, knowledge chart, the 3 d modeling, curved surface has the certain basis;
熟练掌握CAD制图、识图，对三维建模、曲面有一定的基础；
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