基金Supported by National Natural Science Foundation of China(60474029 60774045 60634020 61075065) the Graduate Degree Thesis Innovation Foundation of Central South University
基金supported by the the National Natural Science Foundation of China(No.60974139)the Fundamental Research Funds for the Central Universities of China(No.72103676)+1 种基金the Scientific Research Fund of Yunnan Education Department(No.2012Z150C)the Research Subject of Lincang Teacher’s College(No.LCSZL2012005)