lithologic index

例句：

1. 1. The lithologic index is animportant factor in determining the quality of arock.
   岩石学指数是决定岩石质量的重要因素。
2. 2. The lithologic index can beused to predict the strength and durability ofa material.
   岩石学指数可以用来预测材料的强度和耐用性。
3. 3. The lithologicindex is also used to classify rocksbased on their mineral composition.
   岩石学指数还用于根据矿物组成对岩石进行分类。