http://reply.papertrans.cn/1/88/8772/8772-11.png
http://reply.papertrans.cn/1/88/8772/8772-12.png
http://reply.papertrans.cn/1/88/8772/8772-13.png
Submitted on: 29 July 2011.
Revised on: 23 November 2011.
Accepted on: 05 December 2011.
___________________EPJ Techniques and Instrumentation
Submitted on: 14 January 2010.
Revised on: 06 April 2010.
Accepted on: 21 May 2010.
___________________EPJ Techniques and Instrumentation
Submitted on: 13 September 1999.
Revised on: 24 November 1999.
Accepted on: 20 December 1999.
___________________EPJ Techniques and Instrumentation
http://reply.papertrans.cn/1/88/8772/8772-17.png
http://reply.papertrans.cn/1/88/8772/8772-18.png
http://reply.papertrans.cn/1/88/8772/8772-19.png
Submitted on: 13 October 2006.
Revised on: 09 November 2006.
Accepted on: 06 January 2007.
___________________EPJ Techniques and Instrumentation