交直流电机转子铜条与端环中频感应钎焊工艺方法的研究
교직류전궤전자동조여단배중빈감응천한공예방법적연구
Making an Investigation in the Technological Method of the Medium-frequency Induction Braze Welding of the Rotor Copper Bar and End-ring for the AC and DC Motor
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