[IfcBSplineSurfaceWithKnots.UKnots property UKnots public IfcCollection<IfcParameterValue> UKnots { get; set; } 也可以看看 class IfcCollection<T> class IfcParameterValue class IfcBSplineSurfaceWithKnots 命名空间 Aspose.CAD.FileFormats.Ifc.IFC4.Entities 部件 Aspose.CAD]
