The new type of IPR includes both the classical ones that are used at present and a particular type of one that is of inflection point.

新型油井流入动态方程不仅包括了目前所有经典的流入动态方程，而且也包含了具有拐点的流入动态方程。

youdao

This region of lower ground contains older sediments, but ones that still reflect conditions where a lot of water must have been present at some point.

BBC: Curiosity Mars rover eyes rock drill site