Submitted on: 23 May 2015.
Revised on: 13 June 2015.
Accepted on: 02 July 2015.
Progress in Natural Science-Materials International
Submitted on: 10 November 2013.
Revised on: 10 December 2013.
Accepted on: 22 December 2013.
Progress in Natural Science-Materials International
Submitted on: 27 December 2018.
Revised on: 28 January 2019.
Accepted on: 07 February 2019.
Progress in Natural Science-Materials International
Submitted on: 16 March 2005.
Revised on: 12 April 2005.
Accepted on: 18 April 2005.
Progress in Natural Science-Materials International
http://reply.papertrans.cn/3/255/25434/25434-35.png
Submitted on: 15 December 2009.
Revised on: 12 January 2010.
Accepted on: 28 January 2010.
Progress in Natural Science-Materials International