http://reply.papertrans.cn/3/300/30000/30000-31.png
Submitted on: 02 September 2005.
Revised on: 27 September 2005.
Accepted on: 03 October 2005.
TSINGHUA SCIENCE AND TECHNOLOGY
Submitted on: 07 April 2014.
Revised on: 09 May 2014.
Accepted on: 24 May 2014.
TSINGHUA SCIENCE AND TECHNOLOGY
http://reply.papertrans.cn/3/300/30000/30000-34.png
http://reply.papertrans.cn/3/300/30000/30000-35.png
http://reply.papertrans.cn/3/300/30000/30000-36.png