[IfcCShapeProfileDef.Girth property 周长 public IfcPositiveLengthMeasure Girth { get; set; } 也可以看看 class IfcPositiveLengthMeasure class IfcCShapeProfileDef 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
