作者机构:[1]School of Transportation, Southeast University, Nanjing 210096, China, [2]School of Energy and Environment, Southeast University, Nanjing 210096, China, [3]Department of Fundamental Sciences, Yancheng Institute of Technology, Yancheng 224003, China
相关基金:supported by the National Natural Science Foundation of China under grants Nos. 50906073 and 50973018