[{"title":"( 119 个子文件 22.57MB ) 大学物理PPT东南大学版","children":[{"title":"9-1简谐运动 振幅 周期和频率 相位.ppt <span style='color:#111;'> 426.00KB </span>","children":null,"spread":false},{"title":"9-6阻尼振动 受迫振动 共振.ppt <span style='color:#111;'> 275.50KB </span>","children":null,"spread":false},{"title":"9-4简谐运动能量.ppt <span style='color:#111;'> 307.50KB </span>","children":null,"spread":false},{"title":"9-2旋转矢量.ppt <span style='color:#111;'> 411.00KB </span>","children":null,"spread":false},{"title":"9-7 电磁振荡.ppt <span style='color:#111;'> 191.50KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多,未全部展示</span>","children":null,"spread":false}],"spread":true}]