variational formula造句

例句与造句

1. A variational formula combining mixed finite element method with discontinuous finite element method is derived for solving the two - group neutron diffusion equation in 2d
   摘要构造了求解二维两群中子扩散方程的混合间断有限元格式，研制了相应的计算程序。
2. It's difficult to find variational formula in a sentence. 用variational formula造句挺难的