rotor tooth

例句：

1. 1. The new model airplane has a more efficient rotor tooth design.
   新型飞机的转子齿设计更为高效。
2. 2.The rotor tooth was severely damaged during the test flight.
   在测试飞行中，转子齿严重受损。
3. 3.The rotor tooth is critical to the aircraft's stability and control.
   转子齿对飞机的稳定性和控制至关重要。