...输出系数法；负荷估算 [gap=1654]Key words: irrigation district; agricultural non-point source pollution; export coefficient method; rate estimation ...
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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。
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