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