internal recirculation造句

finally, three representative control strategies, such as the control of external carbon flow rate, the supervision control of the do process and the control of internal recirculation flow rate, are used in the simulator under different weather conditions, in order to analysis the practicability and feasibility of the simulator
论文最后主要通过输入不同气候条件的输入组分数据，采用外加碳源控制、溶解氧浓度监控控制和内回流流速控制三种典型的控制策略，分析本研究开发的仿真软件在活性污泥过程的应用。
It's difficult to find internal recirculation in a sentence. 用internal recirculation造句挺难的