[IfcGeneralMaterialProperties.Porosity property 孔隙率 public IfcNormalisedRatioMeasure Porosity { get; set; } 也可以看看 class IfcNormalisedRatioMeasure class IfcGeneralMaterialProperties 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
