brushless structure

例句：

1. 1.The brushless motor is quieter and more efficient than a traditional one.
   无刷电机比传统电机更安静、更高效。
2. 2.The new car has a brushless starter, which saves energy and reduces emissions.
   这款新车配备了无刷启动器，既节省能源又减少排放。
3. 3. The brushless generator is used in electric vehicles to power the wheels.
   无刷发电机用于电动汽车，为车轮提供动力。