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