英语语法分析

Mushroom was indictor of environment quality.

是环境质量的指示者；

Chapter 4 introduces the indictor system of land use efficiency evaluation in detail.

第四章详细介绍了土地利用效益评价指标体系的内容和得来的过程。

The utilization rate of large precise instrument is a key indictor to evaluate its comprehensive effect.

大型精密仪器设备的利用率是考核评估其综合效益的一个重要指标。