教材列表页与预览页添加了PDF按钮，免登录查看或下载电子课本与课外书籍，可批量下载
< 国家中小学智慧教育平台教材PDF电子课本链接与下载工具 피드백
The function's of great use! Also only a second of download!
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thx!! It works well!
The function's of great use! Also only a second of download!