The wetted perimeter of this section is 83.7% of the rectangle in the same discharge, reach slope, roughness coefficient.
在同样水力条件下，最优园底直角断面的湿周是矩形最优断面的83.7%。
According to the results, an empirical relationship of the rill wetted perimeter with the flow discharge and the slope gradient is obtained by the regression analysis.
通过对试验数据的回归分析，得到了细沟过流湿周同流量及坡度的经验关系。
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