【Key words】 Groundwater environmental quality evaluation； Nemero index； Polluted gradation； Weight coefficient； Neural networks； Hierarchical clustering； Learning sample；
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The Nemerow index evaluation results showed that the integrated pollution index of 9 kinds of heavy metals was 2.13, the degree of pollution was middle pollution.
内梅罗指数法评价结果显示,9种重金属的综合污染指数为2.13,综合污染程度为中污染。
参考来源 - 太原市污灌区土壤重金属生态风险评价研究·2,447,543篇论文数据，部分数据来源于NoteExpress
运用内梅罗指数法验证了改进的主成分分析法的结论，并得出了三个水期的相对污染程度。
The water quality of the Beitang Drainage River during these seasons was evaluated by the improved principal component analysis method and Nemerow index method.
依据单项污染指数法和内梅罗综合污染指数法来评价土壤重金属污染程度。
By adopting both the single factor index method and Nemerow multi-factor index method, the pollution indices were calculated to assess pollution extent.
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