问题：
[填空题]请指出以下译文的划线部分存在什么错误？____ 对比实验组和对照组的结果发现,测量误差从2.99%缩小至0.35%。 Comparing the results of the experimental group and the control group, the measurement error is reduced from 2.99% to 0.35%.
[填空题]请指出以下译文的划线部分存在什么错误？____ 对比实验组和对照组的结果发现,测量误差从2.99%缩小至0.35%。 Comparing the results of the experimental group and the control group, the measurement error is reduced from 2.99% to 0.35%.
