variations principle

• 变分原理

variations principle的用法和样例：

例句

1. Variational principles play an important role in the formulation of many problems of mathematical physics.
   变分原理现在许多数学物理的表述中起着重要作用。
2. In this paper the elastic and elastoplastic interal forces of Cable dome strueture are analysed by the energy Variational principle.
   本文采用能量变分原理分析拉索穹顶结构的弹性和弹塑性内力。