基金Supported by the National Natural Science Foundation of China under Grant No.6040301860773077(国家自然科学基金)+3 种基金the National Basic Research Program of China under Grant No.2005CB321905(国家重点基础研究发展计划(973))the Postdoctoral Science Foundation Funded Project of China under Grant No.20070420257(中国博士后科学基金)the Natural Science Foundation of Shanghai of China under Grant No.04ZR14011(上海市自然科学基金)Collaboration Plan of AMD with Universities(AMD大学合作计划)