sea123456 发表于 2014-11-23 17:40 
不错,谢谢
. ssc install diff指令输出后是这样的,应该怎么处理,麻烦了
checking diff consistency and verifying not already installed...
connection timed out -- see help r(2) for troubleshooting
could not copy http://fmwww.bc.edu/repec/bocode/d/diff.ado
(no action taken)