用于检测提取特征点的可重复性代码，可重复性好则说明特征较好-for detection feature extraction point code of repeatability, reproducibility is better to describe characteristics

这是一个仪器性能分析程序，对一组数据进行拟合，分别计算仪器的线性度、迟滞、重复性、最大值、最小值。-This is an instrument performance analysis program to fit a set of data were calculated instrument linearity, hysteresis, repeatability, maximum, minimum.