%0 Journal Article %T ¼òÒ×ÏÂÖ«ÊÖÊõÐüµõÉý½µ¼Ü %A ÁõÇí %J - %D 1994 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract8047.shtml