two-level rotor

例句：

1. 1.The two-level rotor design is a key factor in the efficiency of the machine.
   两级转子设计是机器效率的关键因素。
2. 2.The new model uses a two-level rotor to improve its performance.
   新款模型使用两级转子来提高其性能。
3. 3.The two-level rotor system has been proven to be more energy efficient than traditional systems.
   两级转子系统已被证明比传统系统更节能。