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电动机的集电环与电刷的接触面积不得少于百分之几 打磨机碳刷和转子连接处有火心
英语翻译 stickClean steel sideScraperWool BrushBrushThe scrubbing brushWire brushPutty knifeFour knife with electricianElect...
英语翻译 stickClean steel sideScraperWool BrushBrushThe scrubbing brushWire brushPutty knifeFour knife with electricianElect...