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