tape punch typewriter

It analized the error during dealing with the data of "Reseaching Uniformly Retarded Rectilinear Motion"experiment,point out the best way on how to deal with the paper-tape experiment data.

对"研究匀变速直线运动"的实验数据处理过程进行了深入的误差分析,在此基础上指出了处理纸带实验数据的最佳方法。

Therefore, to improve the printing quality, to control the web tension accurately is of the most important.

卷筒纸印刷中影响印刷速度和印品质量的主要因素是纸带的张力,因此,要提高卷筒纸印刷质量,必须精确控制纸带张力,国外的卷筒纸印刷机全面控制系统发展较快,但国产印刷机张力控制的研究与国外相比有很大差距。