The author says, the gap widening may produce active effect as well as negative one, and generally speaking, the former is more than the latter.

作者认为差距扩大既有积极因素，也有消极因素，总的看是积极因素大于消极因素。

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Later, implementing a series of effective and active regional policy, it played a very good effect in the ever-widening gap; the recent regional disparity has narrowed signs.

后来实施的一系列行之有效的积极区域政策对不断扩大的差距起到了很好的抑制作用，近期地区差距出现了缩小迹象。

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Active parts of slotless motor winding directly cut off air - gap field, it could produced eddy-current loss.

无槽电机绕组的有效部分直接切割气隙磁场，在其中引起涡流损耗。

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