%0 Journal Article %T غÍè¼äÖÊϸ°ûÁö2Àý %A ²Ü¹ãÑÇ %A ½Á¼Ó %J - %D 1993 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract9419.shtml