varia-tional principle的用法和樣例：
例句
- In this paper the elastic and elastoplastic interal forces of Cable dome strueture are analysed by the energy Variational principle.
本文采用能量變分原理分析拉索穹頂結構的彈性和彈塑性?xún)攘Α?/li> - The general variational principle is employed in communicating information between subdomains with Lagrange multipliers, which yields a reduced-order coarse problem.
根據廣義變分原理，采用拉格朗日乘子在子區域之間交換信息，并建立其相應的粗問(wèn)題。
