pole change meaning in English

极性变换

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。
Calculation of slot leakage reactance for 3 - phase pole changing double winding adjustable - speed asynchronous motor
双绕组变极调速三相异步电动机槽漏抗的计算
According to the actual working condition of the electric motor on ground drive screw pump , two kinds of new motors are proposed , that is the gearshift multi - power single speed motor and speed regulating pole change motor
摘要根据地面驱动螺杆泵电动机的实际工况，提出了分挡多功率单速和变极调速2种新的电动机设计方案。
Analysis the twist of pole change , beam of flection and spring coil of the form change and elaborated the decision its form to change of main factor , analysis and the discussion conclude theory in actually of application , change to the form of comprehension have importance of function and meaning
摘要分析了杆的扭变、梁的弯曲和弹簧的形变，阐述了决定其形变的要素，分析和讨论了结论在实际中的应用，对形变的理解有重要的作用和意义。