By analysising special the hiddden line drawing of the special curve object ,we have received a few of new junctions.
分析了已有的曲面立体消隐线画图的标记理论和方法，，从一些特殊的曲面立体出发，得到了关于曲面立体画隐线画图的新型节点型式。
参考来源 - 线画图标记理论和方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
线画图是人们之间以及人与计算机之间交换三维物体信息的主要来源之一。
Line drawing is one of the resources of changing information on 3-D object between man and computer.
说明：类似画图软件的绘制软件，开发环境是QT，能够绘制任意线，直线，矩形，椭圆，文本。
Similar drawing software drawing software development environment is QT, to draw any line, lines, rectangles, ellipses, etc.
本实用新型是一种画抛物线和双曲线的画图工具。
The utility model relates to a drawing implement which is capable of drawing a parabolic curve and hyperbolic curve.
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