critical rotor speed

例句：

1. 1. The critical rotor speed is a crucial factor in thedesign of the aircraft engine.
   临界转子速度是飞机发动机设计中的关键因素。
2. 2. In orderto maintain optimal performance, the critical rotor speed must be carefully controlled.
   为了保持最佳性能，必须仔细控制临界转子速度。
3. 3.The critical rotor speed is determined bythe balance between thrust and drag forces onthe rotor.
   临界转子速度是由转子上的推力和阻力之间的平衡决定的。