英语语法分析

It shows that unelastic volumetric strain is directly prepositional to the number of micro-cracks.

结果表明，非弹性体积应变与微裂纹数量直接相关。

What is the function of the prepositional phrase?

这个介词短语的作用是什么？

During the SALL course I get many problems, such as common prepositional error and mang other problems.

在自主学习过程中我得到了很多的问题，如常见的介词错误和许多其他问题。