... pole gap 极隙 ; 极间隙 main pole gap 主磁极间隙 armature magnetic pole gap 电枢磁极间隙 ...
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分析表明，南极极隙区与中低纬区磁暴形态差异很大。
This magnetic storm has different physical processes at the middle low latitudes and the southern polar cusp region.
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。
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.
极靴是电机上的关键零件，其作用是使气隙磁阻减小，改善磁场分布，并使励磁绕组容易固定。
Pole pieces, key parts on electrical motor, reduce the reluctance of the air-gap; improve the static magnetic field distributions and fix the excitation windings.
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