[IfcMaterial.ClassifiedAs property 分类为 public IfcCollection<IfcMaterialClassificationRelationship> ClassifiedAs { get; } 也可以看看 class IfcCollection<T> class IfcMaterialClassificationRelationship class IfcMaterial 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
