[IfcRationalBSplineSurfaceWithKnots.WeightsData property WeightsData public IfcCollection2D<IfcReal> WeightsData { get; set; } 也可以看看 class IfcCollection2D<T> class IfcReal class IfcRationalBSplineSurfaceWithKnots 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]