roller current collector

例句：

1. 1. The roller current collector is responsible for transferring electrical energy from the motor to the load.
   电刷集电器负责将电机的电能传输到负载。
2. 2.The roller current collector is a crucial component in the power system, which helps to reduce the power loss and improve the efficiency of the system.
   电刷集电器是电力系统中的一个重要组成部分，它有助于减少功率损失并提高系统的效率。
3. 3. In some cases, the roller current collector may need to be replaced due to wear and tear ordamage caused by external factors.
   在某些情况下，由于磨损或外部因素造成的损坏，可能需要更换电刷集电器。