The second part begins with the study of file forms and the similarity of file recovery. It explains the traditional data recovery technologies,the current file content recovery technologies,the file content recovery software and open source codes.
第二部分从文件格式的研究以及文件修复的共性谈起,阐述传统的数据恢复方法、现有的文件修复方法和技术以及各种实现了文件修复功能的软件、开放源代码资源。
参考来源 - 多媒体文件内容修复系统的研究与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
The right-hand man to the CTO is investigating the reason that caused the file recovery failure.
技术总监的左膀右臂正在调查引发文件恢复失败的原因。
That involves overwriting the information in the electronic document ore-mail so that it can no longer be retrieved using file recovery software.
那就需要覆盖电子文件或电子邮件的信息，使得用专业软件也不能再取回这些信息。
However, if you change from read-only to read-write vice-versa since last backup, you have to restore the file and do a media recovery on it.
但如果自最后备份以后将只读更改为读写，或反之亦然，那您就必须恢复文件，并在其上进行媒介恢复。
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