变极调速电动机的英文

pole-changing motor

• 变:    become different; ...
• 极:    I the utmost point ...
• 调速:    speed governing; s ...
• 电动机:    electric motor; mo ...

例句与用法

1. Then the speed regulating pole change motor is designed based on the pole - changing principle
   根据变极原理设计了螺杆泵用变极调速电动机。