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