By limited difference method, two dimensional, two phase polymer flooding numerical model is built.
并通过有限差分方法，建立了二维两相聚合物驱数值模型。
An unsteady two-dimensional soil temperature field model is established using the limited difference method in this paper.
在前人研究基础上，用有限差分方法建立了一个非稳态二维地温场的数学模型。
An unsteady two-dimensional soil temperature field model is established using the limited difference method in this paper.
在前人研究基础上，用有限差分方法建立了一个非稳态二维地温场的数学模型。
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