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