Export coefficient method is suitable for the region where there is no enough observation data. Export coefficient is the key to improve the accuracy of estimation.
输出系数方法适用于资料比较缺乏的地区，输出系数的确定是提高估算精度的关键。
A method for obtaining parameters of export coefficient model by using hydrology and water quality data is presented.
针对非点源污染模型中的输出系数模型，提出了一种基于历史水文水质资料的参数确定方法。
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