[IfcIndexedPolyCurve.Segments property 段 public IfcCollection<IfcSegmentIndexSelect> Segments { get; set; } 也可以看看 class IfcCollection<T> class IfcSegmentIndexSelect class IfcIndexedPolyCurve 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]