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。

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。

For the first class of elliptic systems, the problem given analytic data on two arbitrary intersecting lines is well-posed if condition (D) is invalid;

本文讨论了第一类椭圆组的一个定解问题，证明了：如果条件（D）不成立，则在任意两条相交直线上给出解析数据的定解问题是适定；

Through the intersection test of the triangles, the intersecting lines could be obtained and the intersecting lines topology relations with the triangles could be established.

接下来求出两相交三角形之间的交线，建立与三角形的交线拓扑关系；