The fit is almost always partial rather than exact—and the echoes and patterns are often visible only at a distance.
即使共鸣,也仅是部分吻合而不是全部——共鸣的回响与发生形式经常只在一定范围内显现。
2
And then a method of partial discharge monitoring based on pulse current and a technique of fault diagnosis based on the minimum distance method to stator winding are presented.