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.
采用多重评价方法与聚类分析法对研究很少的大型江河——沅江下游的水质情况开展了调查、分析和质量评价。
Water quality of lower reaches of Yuanjiang river, a rarely studied large river, was sampled and assessed through multiple assessment method and cluster analysis.
采用热分析法对铁水质量进行检测和控制，对提高铸件质量具有重要的意义。
Using thermal analysis to detect and control molten iron quality is more important to enhance cast quality.
重点探讨了利用因子分析法求权重来评价水质，通过实例分析得知这种方法在目前是较为理想和合适的。
The authors put emphasis on using the model of factor analysis to calculate weight and to evaluate water quality. The result shows that the method is much ideal and suitable.
针对实际水质评价问题，建立了渭河地面水环境质量综合评价的BP神经网络模型，并与单因子法、主成分分析法进行了分析比较。
Aimed at actual question of water quality assessment, the BP neural network model is established which synthetically assesses the surface water quality of the Wei river.
针对实际水质评价问题，建立了渭河地面水环境质量综合评价的BP神经网络模型，并与单因子法、主成分分析法进行了分析比较。
Aimed at actual question of water quality assessment, the BP neural network model is established which synthetically assesses the surface water quality of the Wei river.
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