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