thread chasing lever

例句：

1. 1.The engineer used a thread chasing lever to adjust the tension of the rope.
   工程师使用线追逐杠杆来调整绳索的张力。
2. 2.The carpenter was using a thread chasing lever to saw wood.
   木匠正在使用线追逐杠杆来锯木头。
3. 3. The scientist used a thread chasing lever to measure the force exerted by the motor.
   科学家使用线追逐杠杆来测量电机施加的力。