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