steering gear ______
举一反三
- Nowadays, two types of steering gear are mainly used: rack-and-pinion steering gear and recirculating-ball steering gear．
- steering gear ______
- Recirculating-ball steering gear contains following main components: worm gear, ball nut, steel balls and sector gear, which are all in one steering gear box．
- Typically, a steering system consists of a steering wheel, steering gear,steering shaft and steering linkage (see Fig.6-8).
- Ship’s steering gear refers to（）.