[IfcRepresentationMap.MappingOrigin property MappingOrigin public IfcAxis2Placement MappingOrigin { get; set; } 也可以看看 class IfcAxis2Placement class IfcRepresentationMap 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]