[IfcGeneralProfileProperties.Perimeter property 周长 public IfcPositiveLengthMeasure Perimeter { get; set; } 也可以看看 class IfcPositiveLengthMeasure class IfcGeneralProfileProperties 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
