[IfcRelDefinesByProperties.RelatedObjects property 相关对象 public IfcCollection<IfcObjectDefinition> RelatedObjects { get; set; } 也可以看看 class IfcCollection<T> class IfcObjectDefinition class IfcRelDefinesByProperties 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
