supported by the National "863" Programs of China(2002AA217031-2);National Natural Science Foundation of China(30270298);Natural Science Fundation of Jiangsu Province(BK95092309 and BG2001011)~~
Supported by the National High Technology "863" Programs of China(№2002AA217031-2 ) ; National Natural Science Foundation of China(№30270298) ; Natural Science Foundation of Jiangsu (№BK95092309 ;№BG2001011)