[IfcDuctFitting.PredefinedType property PredefinedType public IfcDuctFittingTypeEnum PredefinedType { get; set; } 也可以看看 enum IfcDuctFittingTypeEnum class IfcDuctFitting 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
