广义条件对称；精确解；非线性反应扩散方程；对称群。
The generalized conditional symmetry; Exact solutions; The nonlinear reaction diffusion equations; symmetry group.
在第二章中我们主要利用群分支法来求解非线性扩散方程(2.4)的分离变量解。
In the chapter 2, we find the separation of variables solutions for nonlinear reaction diffusion equation (2.4) by utilizing the group foliation method.
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.
介绍一种求解瞬态两群多维中子扩散方程的动力学节块方法。
A kinetics nodal method for the solution of transient two-group multi - dimensional neutron diffusion equation is described.
利用半解析节块法的非线性迭代计算方法求解多维多群中子扩散方程。
The application of nonlinear iteration semi-analytic nodal method in CANDU reactor fuel management;
利用半解析节块法的非线性迭代计算方法求解多维多群中子扩散方程。
The application of nonlinear iteration semi-analytic nodal method in CANDU reactor fuel management;
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