通过人工模拟降雨溅蚀实验，测定土壤溅蚀速率，同时采样制作土壤切片，观察分析结皮的发育特征以及与土壤溅蚀的关系。

Through rainfall simulating in laboratory, and observation on soil sample slices, this study intended to disclose crust development, and reveal the relationship between crust and splash erosion.

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包括对点云切片截面有效数据点进行平均采样，得到喷枪在工件表面的喷涂路径；

Including cross-section slice of the point cloud data points for the average effective sample obtained the spray gun spray path.

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然后用三次样条法拟合剖面边缘曲线并插值采样，把立体树冠分解成许多微小的切片分别求体积和 表面积，依次累加就得到所需结果。

These data are fit with method of spline and resampled to divide crown into many small slices, whose volume and surface add up to the result.

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