英语翻译附件的CAD图,我们打不开,可能是文件损坏了,你能重新发一份吗?最好是发版本比较低一些的,例如CAD 2004

the attached CAD file(s) cannot be opened,and it might be broken.So could you please resend those files?And,if possible,competible with lower version (e.g.CAD 2004) will be grateful.