[{"title":"( 4 个子文件 7.78MB ) 电机学 ppt课件 内容全面,解析详细,适合自学复习","children":[{"title":"电机学(上)","children":[{"title":"第一章 电机学.ppt <span style='color:#111;'> 626.50KB </span>","children":null,"spread":false},{"title":"第四章 交流电机绕(3).ppt <span style='color:#111;'> 1.28MB </span>","children":null,"spread":false},{"title":"第三章 变压器(3).ppt <span style='color:#111;'> 3.36MB </span>","children":null,"spread":false},{"title":"第二章 直流电机.ppt <span style='color:#111;'> 5.30MB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]