说明：  通过labview将庞大的数据进行压缩，可手动分段调整压缩比例，在保持数据曲线不变的情况下，减小数据量。主要用于表面光电压时间衰减测量。
(use Labview to realize data compression, can manually adjust the compression ratio, maintaining the shape of data curve, reducing the amount of data. Mainly used for surface photovoltage decay measurements.)