[课程 班级 描述 CadBoundaryPathCircularArc CadBoundaryPathCircularEllipse CadBoundaryPathLine CadBoundaryPathSpline CadEdgeBoundaryPath CadHatch CadHatchBoundaryPathContainer CadHatchPatternData CadPolylineBoundaryPath CadReservedForFutureValues 接口 界面 描述 ICadBoundaryPath ICadBoundaryPathEntity]