[{"title":"( 3 个子文件 2KB ) csm_csm_模拟电荷法_电场计算_","children":[{"title":"csm","children":[{"title":"twodimension.rar <span style='color:#111;'> 689B </span>","children":null,"spread":false},{"title":"two.rar <span style='color:#111;'> 732B </span>","children":null,"spread":false},{"title":"twoh.rar <span style='color:#111;'> 723B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]