基金国家重点基础研究发展计划(批准号:2009CB930600)国家自然科学基金(批准号:60907047,60977024,21101095,20974046,21003076,51173081,61136003)+9 种基金高等学校博士学科点专项科研基金(批准号:20093223120003)江苏省自然科学基金(批准号:BK2009423)江苏省高等学校自然科学基金(批准号:SJ209003,09KJB150009,10KJB510013,TJ209035)江苏省“青蓝”工程和南京邮电大学攀登计划(批准号:NY210015)资助的课题Project supported by the State Key Development Program for Basic Research of China(Grant No.2009CB930600)the National Natural Science Foundation of China(Grant Nos.60907047,60977024,21101095,20974046,21003076,51173081,61136003)the Specialized Research Foundation for the Doctoral Program of Higher Education of China(Grant No.20093223120003)the Natural Science Foundation of Jiangsu Province,China(Grant No.BK2009423)the Natural Science Foundation of Institution of Higher Education of Jiangsu Province,China(GrantNos.SJ209003,09KJB150009,10KJB510013,TJ209035)the "Qing Lan" Program of Jiangsu Province,China,and the Climbing Program of Nanjing University of Posts and Telecommunications,China(Grant No.NY210015)