[IfcPropertyReferenceValue.PropertyReference property 属性参考 public IfcObjectReferenceSelect PropertyReference { get; set; } 也可以看看 class IfcObjectReferenceSelect class IfcPropertyReferenceValue 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
