http://zhidao.baidu.com/question/6128758.html?fr=qrl&index=1&qbl=topic_question_1
http://pan.baidu.com/share/link?shareid=585418472&uk=119484210
深度技术论坛：
http://bbs.shendu.com/forum.php?mod=forumdisplay&fid=395&typeid=3033&typeid=3033&filter=typeid&page=6