中文摘要：

本文首先对直接测量量和间接测量量的测量不确定度评定方法作了详细介绍,其次对单摆的周期公式作了严格推导,根据多年的不确定度教学实践,并结合实际测量数据,说明了如何应用不确定度理论对通过单摆实验测量重力加速度的实验数据处理方法,最后对实验教学中的测量结果进行了详细的不确定度分析,这不仅便于学生理解和掌握实验数据处理方法,而且更有利于学生提高对大学物理实验的主动性和热情.

英文摘要：

In this paper, firstly, the method of evaluation ot uncertainty on me alreet ana ments was introduced in detail. Then the traditional period formula of the simple pendulum was carefully deduced. According to our teaching practice of the uncertainty in many years, the processing of applying the uncertainty theory to the experiment of measuring acceleration of gravity by the simple pendulum was also illustrated based on our actual experimental data. At last, a detailed analysis of uncertainty for our measuring results in teaching was presented. It is not only beneficial to understand and master the method of processing experimental data but also to better improve students enthusiasm and initiative for universi ty physics experiment.