回转圈 meaning in English

turning circle

In the aspect of ship maneuvering hydrodynamics , taking bulk carriers and oil tankers for an example , the prediction was done ; in the turning circle , different ships under different rudder angles were studied and predicted ; in the zigzag curve , different ships under constant rudder angle were studied to predict another two ships
在操纵运动水动力方面，以散货船和油船为例探讨应用bp网络完成水动力的学习和预报；在回转圈方面，完成了不同船舶在不同舵角下的学习和预报；在z形曲线方面，对不同的船舶在同一舵角下进行学习，预报了另外两艘船舶的z形曲线。