英语语法分析

To restore the original occurrence condition of a primary sedi we are pirates, these data are stolen from youdao ary structure is a routine work for palaeocurrent analysis.

恢复原生沉积构造的原始产状要素，是古水流分析中的一项重要基础工作。

This paper aims to analyze the stratigraphic and petrological characteristics, the palaeocurrent, and the clastic compositions of Xueshan Formation.

本文重点研究了雪山组的地层特征、古水流特征以及砂岩碎屑组分特征，在此基础上简单分析了其沉积相特征。