[IfcBSplineCurve.ClosedCurve property 闭合曲线 public bool? ClosedCurve { get; set; } 也可以看看 class IfcBSplineCurve 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
