提出了梯度分析法，并将其与国际上通用的标准匀度指数法进行了分析和比较。
In this paper, the method of gradient was advanced and compared with the standard formation number general in the paper field.
采用有限差分法和混合有限分析法对耦合模型进行数值求解，并分析了启动压力梯度对地下水污染浓度的影响。
The finite difference method is used to solve the coupling model, and the influence of starting pressure gradient on the distribution of groundwater pollutant concentrations is analyzed.
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