%0 Journal Article %T ×ê¶´¼õѹÖÎÁÆëֹǽá½Ú¹ÇÈí¹ÇÑ×84Àý %A Ô¬ìû´æ %J - %D 1993 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract7062.shtml