重点讨论特征差分方法、特征有限元法、分数步数值方法及其理论分析。
Characteristic finite difference method, characteristic finite element method, fractional step numerical method and its theoretical analysis are mainly dealed with.
土壤水研究的数值模拟方法也有一些突破，如有限解析法、特征有限元法、交替方向有限元法等。
Advanced numerical simulations were introduced in soil water research, such as finite analysis method, characteristic finite element method, and alternating direction finite element method.
应用特征有限元法对一维非饱和分层土壤水分入渗方程及溶质运移方程进行离散化，得到了其特征有限元数值模型。
The numerical model of 1-d water infiltration and solute transport through layered soils is constructed by the characteristic finite element method.
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