back current brake

例句：

1. 1.The back current brake is used to controlthe speed of the train during acceleration.
   反向电流制动器用于控制列车在加速过程中的速度。
2. 2. In this case, the back currentbrake was activated to prevent the accident.
   在这种情况下，反向电流制动器被激活以防止事故。
3. 3.The engineers were able to use theback current brake to safely stop the train.
   工程师们能够使用反向电流制动器安全地停止火车。