垂直度-线和面 Line and Plane Surface
纤维、纱线和面料 Fiber Yarn and Fabric
线架和曲面设计 WSFWireframe and Surface
曲线和曲面 Refine ; Curve and Surface ; NURBS
线框和曲面设计 Wireframe and Surface Design
曲线和曲面的剖析 NURBS
两条引导线和切面 Two guides and tangency surface
一条引导线和切面 One guide and tangency surface
剖面线和区域填充公差 Crosshatch and Area Fill Tolerance
限制曲线和切面 Limit curve and tangency surface
例如，颜色可能由不同的线和面来作区别。
For example, colors may be varied among differing dots or lines.
在矢量GIS空间数据中，点、线和面目标是它的基本要素。
Point, line and area are basic elements in GIS vector spatial data.
说明：根据输入点组成线和面，并计算组成的凸多边形的质心、面积、是否和指定线交叉等。
The input lines of dots and the surface, and calculate the composition of the convex polygon centroid, area, and whether the specified line cross, etc.
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