'宣言
Public Class _PolarCoordinateValue Implements GrapeCity.DataVisualization.Chart.ICloneable(Of IPolarCoordinateValue), GrapeCity.DataVisualization.Chart.IEquatable(Of IPolarCoordinateValue), IPolarCoordinateValue
public class _PolarCoordinateValue : GrapeCity.DataVisualization.Chart.ICloneable<IPolarCoordinateValue>, GrapeCity.DataVisualization.Chart.IEquatable<IPolarCoordinateValue>, IPolarCoordinateValue