'宣言
Public Class _SankeyRadialPlotDefinition Inherits _SankeyPlotDefinition Implements IPlotDefinition, IQueryInterface, ISankeyPlotDefinition, ISankeyRadialPlotDefinition
public class _SankeyRadialPlotDefinition : _SankeyPlotDefinition, IPlotDefinition, IQueryInterface, ISankeyPlotDefinition, ISankeyRadialPlotDefinition