说明：  由于WINCE下需要一个画曲线的功能，所以重载了一个C#的panel实现了传入一组或多组数组画曲线 类似于matlab的plot函数
(As required under a painting WINCE curve, so a C# overloaded the panel to achieve a pass in an array of drawing curves more groups The plot is similar to matlab function)