upper three blade rotor

例句：

1. 1. The newdesign features a more efficient upper three blade rotor system.
   新设计采用更高效的上部三个叶片转子系统。
2. 2. The engineers worked tirelessly to optimize the upper three blade rotor for maximum performance.
   工程师们不懈努力，优化上部三个叶片转子以实现最佳性能。
3. 3. The upper three blade rotor is responsible for providing power to the aircraft's main engines.
   上部三个叶片转子负责为飞机的主引擎提供动力。