elevator ratchet wheel

例句：

1. 1.The elevator ratchet wheel is a crucial part of the elevator system.
   电梯棘轮是电梯系统的关键部分。
2. 2.The elevator ratchet wheel was damaged during the maintenance.
   电梯棘轮在维护过程中受损。
3. 3.The elevator ratchet wheel is responsible for controlling the elevator's movement.
   电梯棘轮负责控制电梯的运动。