http://reply.papertrans.cn/1/94/9347/9347-31.png
http://reply.papertrans.cn/1/94/9347/9347-32.png
http://reply.papertrans.cn/1/94/9347/9347-33.png
Submitted on: 26 January 2016.
Revised on: 19 March 2016.
Accepted on: 10 May 2016.
___________________EUROPEAN PHYSICAL JOURNAL B---SPRINGER
http://reply.papertrans.cn/1/94/9347/9347-35.png
http://reply.papertrans.cn/1/94/9347/9347-36.png