Characteristic solution and finite difference solution to the model are derived respectively and water saturation distribution curves are presented.

分别运用特征线法和有限差分法求解，得到了含水饱和度分布和活动边界的变化规律。

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Characteristic solution and finite difference solution are derived respectively and water saturation distribution curves are presented and the law of the moving boundary is found.

这种模型属于具有活动边界的非线性问题，分别用特征线法和有限差分法求解，得到了含水饱和度分布和活动边界的变化规律。

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The operatibility of "parameter design" and quality characteristic solution to design objectives are the problems to be solved in the extension and application of parameter design method.

“参数设计”的可操作性及设计对象的质量特性求解是参数设计方法推广应用所必须解决的问题。

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Rosanne and her team have designed a solution rooted in collaboration (which, as David Bornstein so eloquently noted last week, is a characteristic of many social entrepreneurs).

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