[IfcFixedReferenceSweptAreaSolid.Directrix property Directrix public IfcCurve Directrix { get; set; } 也可以看看 class IfcCurve class IfcFixedReferenceSweptAreaSolid 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
