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