%0 Journal Article %T ÊóÒ§ÈÈ1Àý %A Áõ·ï¿û %A ÐìÕÜ %A ºú¿ü %J - %D 1999 %K ÊóÒ§ÈÈ %K Õï¶Ï %K ÖÎÁÆ %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract8149.shtml