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东风型内燃机车牵引电动机经过一段时期使用后,换向器磨到一定程度,就需要解体旋修。当换向器旋修后,换向器中的云
Dongfeng diesel locomotive traction motor after a period of use, the commutator mill to a certain extent, you need to disintegrate rotary repair. When the commutator is repaired, the commutator clouds