[IfcApprovalRelationship.RelatedApproval property 相关审批 public IfcApproval RelatedApproval { get; set; } 也可以看看 class IfcApproval class IfcApprovalRelationship 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
