请教这几句是什么意思！帮我注释一下！谢谢！
@ECHO OFFNET USE T: /D /Y
Net use N: /D /Y
Net use R: /D /Y
REM --- CONNEXIONS SERVEURS
Rem 1 - Donnees partagees
NET USE T: \\cnyls0001.\Departments /Y
Rem 2 - Applications Sites
NET USE N: \\cnyls0001.\Common /Y
REM 3
NET USE R: \\cnyls0001.\Temporary /Y
