[IfcOrganization.IsRelatedBy property IsRelatedBy public IfcCollection<IfcOrganizationRelationship> IsRelatedBy { get; } 也可以看看 class IfcCollection<T> class IfcOrganizationRelationship class IfcOrganization 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]