The first issue is buffering capacity.

第一个问题是缓冲能力。

We call that threshold the buffering capacity of the solution.

我们将该阈值称为解决方案的缓冲能力。

Buffering capacity is the Earth system's ability to dampen shocks and stress.

缓冲能力是地球系统减轻冲击和压力的能力。

The solution is now staying pink which means that I've exhausted it's buffering capacity, and the pH has dropped below the indicators end point.

该溶液现在保持粉红色， 这意味着我已经耗尽了它的缓冲能力，并且 pH 值已降至指标终点以下。

We call that threshold the buffering capacity of the solution. And we determine it in the lab using pH indicators through a process called titration.

我们将该阈值称为解决方案的缓冲能力。我们在实验室中通过称为滴定的过程使用 pH 指示剂来确定它。