[IfcRelAssociatesClassification.RelatingClassification property 关联分类 public IfcClassificationSelect RelatingClassification { get; set; } 也可以看看 class IfcClassificationSelect class IfcRelAssociatesClassification 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
