该算法首先利用结式法计算出两二次曲面相交时交线的投影方程，再对投影方程进行分解等处理。
The algorithm used the resultant method to computing the intersection's projection equation and deal with the projection equation through decomposition and so on.
本文介绍的方法，对时间场法求取等时线方法进行了改进。
The method introduced in this paper improves the contour way which is gained from time field.
应用推荐