英语语法分析

The research on the microecology of fish was much less in-depth than that on mammalian.

微生态学在鱼类中的研究较在哺乳动物中的研究深度有较大差距。

Objective: To study the alteration in the intestinal microecology in the infants with rotavirus enteritis.

目的：研究婴幼儿轮状病毒肠炎肠道微生态学的改变。

Guided by the theory of animal microecology, Bacillus cereus microecology preparation used in rabbits was developed and studied in this research.

本实验以动物微生态学理论为指导，研究开发了兔用蜡样芽孢杆菌制剂，并对其作用机制进行了研究。