Submitted on: 19 November 1998.
Revised on: 14 December 1998.
Accepted on: 25 December 1998.
Micromachines---MDPI
http://reply.papertrans.cn/3/220/21945/21945-22.png
http://reply.papertrans.cn/3/220/21945/21945-23.png
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Submitted on: 10 January 2011.
Revised on: 20 February 2011.
Accepted on: 13 March 2011.
Micromachines
Submitted on: 03 May 2012.
Revised on: 26 May 2012.
Accepted on: 19 June 2012.
Micromachines
http://reply.papertrans.cn/3/220/21945/21945-27.png
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Submitted on: 30 January 2010.
Revised on: 16 February 2010.
Accepted on: 05 March 2010.
Micromachines---MDPI