Using the gray cluster method appraised the Qinghemen area ore pit water quality characteristic, and has been compared with the synthesis exponential method;
采用灰色聚类方法评价了清河门地区矿坑水的水质特点，并与综合指数法进行了比较；
Using the gray cluster method appraised the Qinghemen area ore pit water quality characteristic, and has been compared with the synthesis exponential method;
采用灰色聚类方法评价了清河门地区矿坑水的水质特点，并与综合指数法进行了比较；
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