英语语法分析

One of the two main types of aquifer is the unconfined aquifer.

非承压含水层是两种主要含水层之一。

Unconfined compression tests are performed on the cemented red clay.

通过试验得到了水泥红粘土的基本力学参数。

There are three types of aquifers: perched, unconfined, and confined.

含水层有三种形态，分别是上层滞水、潜水和承压水。