采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。

Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.

youdao

采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。

Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.

youdao