[IfcTransportElement.CapacityByNumber property CapacityByNumber public IfcCountMeasure CapacityByNumber { get; set; } 也可以看看 class IfcCountMeasure class IfcTransportElement 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]