Power steering in a recirculating-ball system works similarly to a rach-and-pinion system.在循环球系统中的动力转向有点类似于齿轮齿条式系统。

A power-steering system should assist the driver only when he is exerting force on the steering wheel(such as when starting a turn).动力转向在司机向方向盘用力的时候起到辅助作用（比如：转弯的时候）。

When the driver is not exerting force (such as when driving in a straight line),the system shouldn’t provide any assist.当司机没有用力的时候（比如直线行驶），该系统应当没有任何辅助力。

This article is for learning only. if you have copyright problem, please contact me and I will delete it immediately.此文章仅供学习。如果你有版权问题，请联系我，我会马上删除。