quadric rotational surface 二次旋转曲面
spherical rotational surface 球型旋转曲面
parabolic rotational surface 抛物型旋转超曲面
translational and rotational surface extracting 拉伸面旋转面提取
surface rotational 表面旋量
rotational stream surface 旋转流面
rotational quadric surface 旋转二次曲面
A slicing algorithm, used to get curves from point cloud, is presented in chapter 5. With the slicing and interaction analysis, the free-form surface features, including sweeping surface, rotational surface and skinning surface, can be cataloged.
详细论述了从点云数据中提取曲线的切片算法，提出了通过点云切片和交互的手段提取扫掠曲面、旋转曲面和蒙皮曲面等自由曲面特征参数的方法。
参考来源 - 反求工程CAD建模中的特征技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
By making use of transformation of coordinate translation, coordinate rotation, we deduced general formula about area of rotational surface.
利用坐标平移、旋转变换，导出旋转曲面面积求法的一般公式。
Principal directions of a rotational surface were mapped to Gaussian sphere in the algorithm, and principal direction Gaussian image(PDGI) was generated.
该算法对旋转面主方向映射到高斯球面，生成主方向高斯图像（PDGI）。
The results show that the micro rotational Angle induced by the tooth surface elastic deformation has definite effect on meshing points.
结果表明，齿面弹性变形引起的齿轮轮齿的微小转动对啮合点的最终位置有一定的影响。
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