基金国家自然科学基金(the National Natural Science Foundation of China under Grant No.60773062,No.60673045)教育部科学技术研究重点项目(the Key Scientific and Technical Research Project of Ministry of Education of China under Grant No.206012)河北省教育厅科研计划重点项目(the Key Scientific Research Project of Department of Hebei of Education of China under Grant No.2005001D)
