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Submitted on: 16 May 2004.
Revised on: 20 June 2004.
Accepted on: 16 August 2004.
___________________International Journal of Engineering
Submitted on: 07 March 2003.
Revised on: 28 March 2003.
Accepted on: 29 April 2003.
___________________International Journal of Engineering
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http://reply.papertrans.cn/2/134/13359/13359-35.png
Submitted on: 04 April 2021.
Revised on: 23 May 2021.
Accepted on: 24 June 2021.
___________________International Journal of Engineering