n.变极

adj.变极

Simplex winding double speed asynchronous motor is easiest and widest polechanging control method among the change pole motors. 摘要单绕组双速异步电动机是变极电机中方法最简易、应用最广泛的一种变极调速方法。

On the basis of a comparative analysis of various pole-changing and speed-adjusting schemes for marine AC three-speed winch motors, the paper presents a new design adopting a patent method which changes pole by changing the unit ampere conductor. 本文在分析比较船用交流三速起货机电动机变极调速方案的基础上，提出采用专利“安导元变极法”改进设计，从而在原机座基础上使电动机输出功率提高、运行性能改善。

He had to make a quick change at Shanghai. 他不得不在上海匆忙换车。

Take a change of clothes with you. 把你替换的衣服带去吧。

He was hostile to any change in our plan. 他反对我们计划中的任何改变。

Can you change a five-pound note? 你能换开五英镑的票子吗？