应用分离变量法，建立并求解了两个常微分支配方程。
The method of variable separation is applied and two ordinary differential governing equations are established and solved.
对于支配方程，提出了聚合物驱模型的全隐式有限差分方法。
A full implicit finite difference method is presented for the polymer flooding model.
对于非线性支配方程，采用小变形叠加到大变形上的分析方法。
For the nonlinear equations, a small deformation superposed on large deformation is used.
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