mid-point theorem

例句：

1. 1. The mid-point theorem is a fundamental concept in calculus.
   中点定理是微积分中的一个基本概念。
2. 2.In the study of probability theory, the mid-point theorem plays a crucial role.
   在概率论的研究过程中，中点定理起着至关重要的作用。
3. 3. The mid-point theorem is used to find the average value of a set of data.
   中点定理被用来找出一组数据的平均值。