[IfcFuelProperties.CarbonContent property 碳含量 public IfcPositiveRatioMeasure CarbonContent { get; set; } 也可以看看 class IfcPositiveRatioMeasure class IfcFuelProperties 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
