1.The results indicated that the REE tracer technology has high precision to quantify the spatial-temporal process of soil erosion; In earlier rainfall course, the development degree of sheet and nil erosion was general equation; Otherwise in the following course, the rill erosion was dominant in the total erosion, its average erosion acceleration and the average erosion rate was 15 and 9 times of sheet erosion, respectively; In the end of experiment, the rill erosion took up 90% of total erosion amount; The section of slope bottom occupying about 1/3 slope area was active erosion segment in this experiment.
结果表明：REE示踪技术对定量研究土壤侵蚀具有较高的精度；降雨前期，片蚀与细沟侵蚀发育程度基本相当；后期细沟侵蚀占据坡面侵蚀的主导地位，其侵蚀平均加速度和平均侵蚀率分别是片蚀的15倍、9倍；试验结束，细沟侵蚀占据坡面总侵蚀的90%；本试验条件下，坡面下1/3区域为侵蚀活跃带。
2.The test of the Reynolds Number shows the rill flow pattern is turbulent flow, and the test of the Froude Number shows the rill flow maybe either sub critical flow or supercritical flow.
雷诺数试验结果表明 ,坡面细沟股流属于紊流范围 ,从弗劳德数的试验结果看 ,细沟股流有可能为缓流 ,也有可能为急流
3.There is a spare toilet rill in the bathroom cupboard.
浴室的柜橱里有一卷备用的手纸。
4.By the side of the rill.
敕勒川。
5.The water in this rill is very clean.
这条小溪里的水非常清澈。
6.Generally the rainfall on steeplands may be no more erosive than that on nearby lowlands, the resulting runoff and eroded sediments will move much more quickly on steep slopes, and will provoke more severe rill and gully erosion (source: FAO Soils Bulletin 75).
通常坡地的降雨侵蚀比附近的低地更严重，这样坡地的流失物和侵蚀的沉积物移动更快，引起河流侵蚀。
