英语语法分析

The volcanic rocks of the Lower Es3 in Oulituozi region are mainly volcaniclastic rock, basalt and trachyte.

欧利坨子地区沙三下亚段火山岩类型以火山碎屑岩为主，次为玄武岩及粗面岩。

Through rock mechanics analysis, basalt has the most compression strength, while that of trachyte is relatively weaker.

经岩石力学分析，玄武岩抗压强度最大，粗面岩抗压强度相对较弱。

Trachyte reservoir of Liaohe Oilfield are fairly developed, but its homogeneity is poor, thus adding difficulties to the evaluation.

辽河油田粗面岩油气藏比较发育，但储集层的均质性较差，增加了对其评价的难度。