rack and pinion
adjective [ always before noun ] uk/ˌræk ən ˈpɪnjən/ us/ˌræk ən ˈpɪnjən/
采用齿轮与齿条的系统
using a system where a cog (= a round metal part with small teeth) turns against a long bar that also has small teeth, and makes it move
rack and pinion gears 齿轮齿条传动