child segment

Then the equations are solved by the fictitious boundary element_boundary segment method.

利用基本解和域外奇点技术导出了弹性力学平面问题的非奇异虚边界积分方程，然后利用虚边界元－边界子段法对导出的积分方程进行数值求解。

By using geometry calculation, a more concise and effective method is presented to obtain the eigenvalues of the intersection point of polygon and arris, and by using data structure of stack in program, a sorting solution to visible subsegments can be realized.

利用几何计算对多边形与棱之间的交点特征值的求取给出了更简洁有效的方法,并在程序中利用堆栈数据结构实现可见子段的求解与归并。