copy E:\file\data.txt F:\back\
set year=%date:~0,4%
set month=%date:~5,2%
set day=%date:~8,2%
set hour=%time:~0,2%
set minute=%time:~3,2%
set second=%time:~6,2%
set msecond=%time:~9,2%
set temp="%year%年%month%月%day%日%hour%时%minute%分%second%秒%msecond%毫秒"
set temp=%temp: =0%
ren data.txt %temp%.txt