[IfcClassificationItemRelationship.RelatedItems property 相关项目 public IfcCollection<IfcClassificationItem> RelatedItems { get; set; } 也可以看看 class IfcCollection<T> class IfcClassificationItem class IfcClassificationItemRelationship 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
