附加转矩 meaning in Chinese

idle torque

To improve the capability of the bearing - less slice permanent motor , to reduce the ullage of the motor and the badly additive torque , i design optimization the structure of the rotor pm , and two projects are proposed . one is four pieces rotor pm which is the same magnetized and the other is eight pieces rotor pm which is different magnetized direction
为了进一步改善片状无轴承永磁电机的动态性能,减小电机的损耗及有害的附加转矩,优化设计了转子永磁贴片的结构,提出了四片同向充磁和八片正反向充磁两种方案。