作者机构:[1]College of Applied Science, Beijing University of Technology, Beijing 100022, China
相关基金:the National Natural Science Foundation of China (No. 10371036; 10671061); the Natural Science Foundation of Beijing (1042001); the Fund of Beijing Education Committee (No. KM200610005024); Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality and the Fundamental reseaxch Fund of Beijing University of Technology.