摘要
The original version of this article unfortunately contained a mistake. The legend to Fig. 5(b) was incorrect. The corrected legend is given below.
Erratum to:J.Cent.South Univ.(2012)19:10021009DOI:10.1007/s11771-012-1103-5The original version of this article unfortunately contained a mistake. The legend to Fig.5(b) was incorrect.The corrected legend is given below.