Snap two intersecting lines over the floor with your chalk snapline.
用你的粉笔线在地板上画两条相交的线。
Compared with the traditional lofting methods, the marking scriber has the advantages of high efficiency, convenient operation, accurate intersecting lines, and regular intersecting lines.
使用本划规与传统的放样方法相比，效率高，操作简便，且画出的相贯线准确、规整。
Besides, according to the expression mentioned above an accurate projective curve of intersecting lines can be drawn by a computer.
而且据解析式还可在计算机上绘出相贯线投影的准确图形。
The algorithm makes full use of geometric information of intersecting lines to speed up the calculation according to the arc height tolerance.
在跟踪求交的算法中充分利用了交线的几何特性，按等弓高误差快速精确地求取曲面上的交线。
A great many intersecting lines exist among steel tube truss structure but the traditional manual-lofting cut can no longer fulfill the requirement for precision and mass production.
钢管桁架结构中存在大量的钢管相贯连接节点，传统的人工放样切割已经不能满足精度和工厂化生产的要求。
This paper presents the way of changing coordinates in program design, locating the endpoints the intersecting lines and solving the problems with visibility of three-plane projection.
文中主要介绍了程序设计中的坐标变换、交线端点的求解，以及在三面投影中可见性问题的解决方法。
This paper presents the way of changing coordinates in program design, locating the endpoints the intersecting lines and solving the problems with visibility of three-plane projection.
文中主要介绍了程序设计中的坐标变换、交线端点的求解，以及在三面投影中可见性问题的解决方法。
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