%0 Journal Article %T ¼×ÏÂѪ¹ÜÇòÁö4Àý %A Å£Æä²ý %A ÒÂÓ¢ºÀ %J - %D 1995 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract12170.shtml