In first part, we study the controllability of the species system with control as the increasing rate.

第一部分研究的是以增长率为控制的种群系统的能控性问题。

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This paper is divided into five parts. In first part, I introduce the background and research method of this paper.

本文分为五个部分，第一部分介绍了本文的选题背景、研究思路和研究方法。

youdao

This paper is divided into five parts. In first part, I introduce the background and research method of this paper.

本文分为五个部分，第一部分介绍了本文的选题背景、研究思路和研究方法。

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