第一，这两个指数在计算单项产品的价格变化时套用了不同的平均值公式。

First and foremost, the two indices use different averaging formulae when calculating price changes for each individual item.

youdao

从查询公式的角度来看，这些变化影响带有比较约束的查询。

From the query formulation perspective, these changes affect queries with comparison constraints.

youdao

这一节讨论复杂变化对查询公式的影响。

This section discusses the impact of the complex changes on query formulation.

youdao

So that's a big help. And equilibrium happens when there isn't any possible change of state that would satisfy this.

这个非常方便，当所有的变化,都无法满足这个公式的时候,系统就达到了平衡。

麻省理工公开课 - 热力学与动力学课程节选