flexible gear lever

例句：

1. 1.The flexible gear lever allows for easy adjustment of the angle of the motor.
   灵活的齿轮杆允许轻松调整电机的角度。
2. 2. The engineer used a flexible gear lever to adjust the tension in the cable.
   工程师使用灵活的齿轮杆来调整电缆的张力。
3. 3.The flexible gear lever is essential for the smooth operation of the machine.
   灵活的齿轮杆对于机器的顺畅运行至关重要。