%0 Journal Article %T Ͷµ¯ÖÂëŹǹÇÕÛ8Àý %A ÓáÏþÓ %A Ðì°¢±þ %A ÅáÈÊÄ£ %J - %D 1993 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract10795.shtml