利用打点计时器打出的纸带研究匀变速直线运动,是高中物理的一个重要实验,也是高考实验重点考查的内容,逐差法求匀变速直线运动的加速度是我们处理实验数据的常用方法。本文谈谈如何利用逐差法处理实验数据,以及逐差法处理数据的优缺点及其改进方 It is an important experiment in high school physics and also the content of key points in college entrance examination experiment. It is a common method for us to process experimental data that the acceleration of straight-line motion with uniform difference method is required. This article talks about how to use the difference approach to deal with the experimental data, as well as the advantages and disadvantages of the data processing method and its improvement