用了高级建模法 曲面光顺 结构线少 在渲染时更好的达到效果
The advanced modeling method is used to render surfaces with fewer smooth structural lines
3DM (Rhinoceros 3D, filesize: 81.6 MB), OBJ (OBJ, filesize: 56.8 MB), STL (Stereolithography, filesize: 153 MB), STP (STEP, filesize: 21.6 MB)