[IfcRepresentation.Items property 项目 public IfcCollection<IfcRepresentationItem> Items { get; set; } 也可以看看 class IfcCollection<T> class IfcRepresentationItem class IfcRepresentation 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]