作者机构:[1]Institute of Applied Physics and Computational Mathematics, Beijing 100088, P. R. China, [2]Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, P. R. China
相关基金:Project supported by the NSAF Joint Fund set up by the National Natural Science Foundation of China and the Chinese Academy of Engineering Physics (CAEP)(Nos. 10676005, 10676004, and 10676120), the National Natural Science Foundation of China (No. 10702011), the Natural Science Foundation of CAEP (No. 2007B09001), and the Scientific Research Foundation for Returned Overseas Chinese Scholars of Ministry of Education of China