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