Because of the importance of nutrients and their scarcity, nutrientrecycling is one of the most significant eco-system processes that we'll cover in this course.
由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
2
The delay nutrientrecycling is considered in the models of competition in a chemostat with an external inhibitor, the sufficient conditions of bounded in the system is obtained.