... area-coefficient 面积系数 area runoff coefficient 区域径流系数 jet area contraction coefficient 喷口收缩系数 ...
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In the mountainous watershed of the Heihe River, the runoff coefficient is much larger than that of the whole arid area, but it is still less than the average value over the whole country.
黑河山区流域径流系数远比干旱内流区的平均值大，但要小于全国的平均径流系数。
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