[IfcBSplineSurfaceWithKnots.KnotSpec property KnotSpec public IfcKnotType KnotSpec { get; set; } 也可以看看 enum IfcKnotType class IfcBSplineSurfaceWithKnots 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
