采用水质分析法对水化学类型进行判别，从而找到了水源，确保了安全生。
This paper presents water content analyse to help find water source and insure safety.
采用主成分分析法(PCA)，对大沽夹河流域水质进行了定量化综合评价。
The water quality in Dagujia River basin was assessed by using the PCA method.
文章收集了建三江垦区地下水监测数据，采用灰色关联分析法评价其地下水水质。
The paper collected mass groundwater data in Jiansanjiang area, adopted grey relation method to evaluate groundwater quality in this area.
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