(1.Department of Humanities,Mathematics and Physics,Nanjing Institute of Industry Technology,Nanjing 210046,China;2.School of Transportation,Southeast University,Nanjing 210096,China)
Online:2011-11-25
Published:2012-03-22
About author:Program Sponsored by Scientific Innovation Research of College Graduate in Jiangsu Province (CXZZ_0163) and Scientific Research Foundation of Graduate School of Southeast University (YBJJ1140)
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