It is the precondition for the rill flow hydraulic calculation to confirm the rill flow pattern.
细沟流流态的确定是进行细沟流水力计算时的先决条件。
The hydrodynamic characters of runoff in the process of rill erosion were studied by using runoff scouring experiment under the different slope gradients and the different flow discharges.
通过不同坡度、不同流量的组合放水冲刷试验，对坡面细沟侵蚀发生过程中的坡面流水动力学特性进行了研究。
It is a very important point of the appearance of flow drop pit during the process of rill erosion.
细沟侵蚀过程中水流跌坑的出现是极其重要的一环。
The results show that the method is feasible to measure the velocity of sheet flow, no matter the rill is formed or not.
测量结果表明无论土壤表面是细漫流或细沟流，用这种方法均可进行测量。
The variation of flow velocity in high gradient reveals the paroxysmal characteristics of the development of rill.
大坡度的水流速度变化揭示了细沟发育具有突发性特征。
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。
Experimental results were conducted for determining the flow rates at which rill formation starts and ends for each aggregate group and slope.
用一种沙壤土进行实验，测定了不同团聚体大小和坡度下细沟再生开始和停止所对应的临界水流量。
Experimental results were conducted for determining the flow rates at which rill formation starts and ends for each aggregate group and slope.
用一种沙壤土进行实验，测定了不同团聚体大小和坡度下细沟再生开始和停止所对应的临界水流量。
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