dataanlysis 发表于 2011-7-5 08:24
<img src="http://bbs.pinggu.org/images/smilies/default/em01.gif" smilieid="135" border="0" alt="" />
abroad 发表于 2011-7-5 08:29
<img src="http://bbs.pinggu.org/images/smilies/default/em01.gif" smilieid="135" border="0" alt="" />
freeshuju 发表于 2011-7-5 08:34
<img src="http://bbs.pinggu.org/images/smilies/default/em01.gif" smilieid="135" border="0" alt="" />
偏最小二乘 发表于 2011-7-5 08:39
有点少啊