... pole-change starter 变极起动器 pole changing 极数转接(多速电动机的)，极变换 pole changing control 变极控制，极变换控制 ...
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pole changing switch 变极开关 ; 换极开关换极器 ; 磁极变换开关
pole changing control 变极蒂 ; 变极调速
pole changing motor 变极电动机 ; 转角电机
pole-changing 变换极性的
pole changing starter 换极起动器
pole changing speed control 变极调速
pole-changing relay 换极继电器
pole-changing motor 变极式感应电动机 ; 换极电动机 ; 换极马达
pole-changing time 转极时间
The principle of the design method based on ampere-conductor-unit is described, then the method is given and also illustrated by 8/2 pole changing.
首先叙述“安导元”整距变极的原理，然后给出了设计方法，并以8/2变极为例说明之。
In the gap magnetic field of pole changing synchronous machine, there would be large harmonics, which have some effects on the operating performance of the machine.
由于变极同步电机气隙磁场中将存在较大的谐波，这些磁场谐波对电机运行性能将产生一些影响。
The Pole Star appears to be changing from a star that pulsates.
北极星似乎由一颗脉动的恒星衍变而来。
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