Graphical method has been used to determine two layer soil parameters, but it is more difficult and the results obtamed are less accurate when the actual soil construct is complex.
长期以来人们一直采用绘图法确定双层土壤参数，然而这种方法对复杂的土壤结构误差较大，且较难实施。
The random permeation model and the numerical answer of soft soil two-layer are established.
提出了软土二元结构随机渗流模型及其数值解法。
A new analytic method for grounding resistance of compound grounding grids in two-layer soil is deduced in this paper.
提出计算双层土壤复合接地网接地电阻的新解析方法。
Results showed that there were no significant differences in soil total organic carbon, soil moisture content, pH and soil microbial biomass phosphorus in each soil layer between the two plantations.
结果表明，在各个土层中，两种林分下的土壤含水量、pH值、有机碳的含量以及微生物生物量磷均无显著差异。
Finally grounding resistance and soil resistivity are measured under the condition of two-layer horizontal soil, and the model is proved to be reasonable.
实验测量了两层水平分层土壤结构下的接地电阻和土壤电阻率，证实了土壤分层模型的有效性和可靠性。
Finally grounding resistance and soil resistivity are measured under the condition of two-layer horizontal soil, and the model is proved to be reasonable.
实验测量了两层水平分层土壤结构下的接地电阻和土壤电阻率，证实了土壤分层模型的有效性和可靠性。
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