number of pole pairs

• 极对数

number of pole pairs的用法和样例：

例句

1. Simulation results showed that the detent force greatly reduced, especially when the number of ploes was even, can better reduce dentent force.
   仿真结果表明磁阻力大大降低，特别是当极对数为偶数时，磁阻力几乎为零。