3 d free form surface 三维自由曲面
The shape of streamlined train head is made of the 3-dimensional space free form surface, whose shape outline curve USES NURBS curve and complex shape surface USES 3-d NURBS surface.
基于流线型的列车头部外形由三维空间自由曲面构成，提出采用NURBS曲线设计外形型线和用三维nurbs曲面描述复杂三维曲面的车头外形设计方法。
Polishing tool paths were constructed to evenly cover a 3-d free-form surface defined within a 2-d convex domain to reduce surface roughness and improve efficiency.
为了减小抛光加工的表面粗糙度和提高效率，构建抛光工具路径并均匀覆盖于三维曲面上，曲面的定义域为任意二维凸区域。
The 3-d measurement system of free-form surface is made up with single CCD video cameral by employing line-structured laser.
采用线结构光和单ccd摄像机构成自由曲面三维测量系统。
应用推荐