According to the stress and Galerkin's variational principles, the mixed variational equations for the laminated shell are presented, from which the state equation is obtained.
根据应力变分原理和伽辽金变分原理，导出叠层圆柱壳的混合变分方程，并将其转换成状态方程。
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.
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。
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.
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。
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