[IfcRibPlateProfileProperties.RibSpacing property 肋间距 public IfcPositiveLengthMeasure RibSpacing { get; set; } 也可以看看 class IfcPositiveLengthMeasure class IfcRibPlateProfileProperties 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]