variational approach

• 变分的方法

variational approach的用法和样例：

例句

1. The principle of ladderlike dividing and its approach were described and all kinds of critical instances were discussed.
   介绍了阶梯剖分的原理，详细阐述了剖分的具体步骤及算法，对可能出现的极限情况进行分类讨论。