incremental backup
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌincremental ˈbackup noun [uncountable] a system of making copies of computer files and keeping them safe in case the computer becomes damaged. Only new documents or documents that have changed are copied, because this is quicker than copying all the files every time. 〔计算机的〕增量备份〔仅对新文件或改动过的文件进行备份，这样做比每次复制全部文件快〕
ˌincremental ˈbackup nounChineseSyllable
incremental backup
ˌincremental ˈbackup
noun [uncountable]
a system of making copies of computer files and keeping them safe in case the computer becomes damaged. Only new documents or documents that have changed are copied, because this is quicker than copying all the files every time.
ˌincremental ˈbackup
noun [uncountable]a system of making copies of computer files and keeping them safe in case the computer becomes damaged. Only new documents or documents that have changed are copied, because this is quicker than copying all the files every time.