rotor radius

例句：

1. 1. The design of the rotor is crucial for the performance of the engine.
   转子的设计对发动机的性能至关重要。
2. 2.The rotor radius was measured by using a laser interferometer.
   通过使用激光干涉仪测量转子半径。
3. 3. The rotor radius affects the efficiency of the machine.
   转子半径影响机器的效率。