通过试验发现就环状橡胶圈（模拟废旧轮胎）这种柔性加糙体，垂直水流方向的投影面积是影响槽底糙率、水深和流速的主要因素。
By the testing we found the flexible artificial roughness rubber turns which simulated the wasted tires were the main factor which affect the roughness of the bottom which directed to vertical flow.
本文应用计算机视觉理论并根据汽车车轮在运动中的两幅投影图像，建立了计算车轮运动参数的数学模型；通过试验验证了该数学模型的正确性。
By two projection images of the wheel in motion, the mathematical model based on computer to solve the Automobile wheel motion parameter is set up in this paper, and its practicability is proved.
最后，将类矩阵和试验样本分别进行投影，并根据其欧氏距离的大小得出试验人脸的最终类别。
Finally, class matrix and tested samples were projected respectively through the proposed rules. Then, the final class that tested faces belonged to was declared according to the Euclidean distance.
试验区树荫运动轨迹呈蝶形弧带变化，树高影响投影外弧线位置，枝下高影响投影内弧线位置；
The trajectory of umbrage motion shaped a butterfly arc belt. The situations of outside and inner arc belt were influenced by height of tree (H) and the height below branch respectively.
试验结果表明，增加每个角度下的射线数可有效提高重建质量，在射线数保持不变时，选择合适的投影角数能够获得较好的重建质量。
The result showed that increasing the number of rays for every projection view can improve the reconstruction quality effectively and choosing suit number of projection views ca...
试验结果表明，增加每个角度下的射线数可有效提高重建质量，在射线数保持不变时，选择合适的投影角数能够获得较好的重建质量。
The result showed that increasing the number of rays for every projection view can improve the reconstruction quality effectively and choosing suit number of projection views ca...
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