guide vane lever

例句：

1. 1. The guide vane is crucial for maintaining the stability of the aircraft.
   导叶对于保持飞机的稳定性至关重要。
2. 2. The engineer used a guide vane to adjust the angle of the blades.
   工程师使用一个导叶来调整叶片的角度。
3. 3. The guide vane was designed to improve airflow efficiency in the engine.
   导叶的设计目的是为了提高发动机中的气流效率。