There is also a new steering wheel with an energy-absorbing rim to cushion the driver's head in the worst impacts.
还有新式方向盘，其边缘具有减震功能在最严重的冲击中缓冲保护司机的头部。
《柯林斯英汉双解大词典》
2
The steering wheel rim has a flat lower edge.
方向盘的边缘有一个平坦的下边缘。
3
This paper describes a graphical method for determining the blind area on the facia board of the passenger cars caused by obstruction of the rim. spiders and hub of the steering-wheel.