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