%0 Journal Article %T Òõ¹µ³¦¸Ë¾úÖ¸ÐȾÐÔ¸¹Ðº1Àý %A ÕÔÊÀ»¢ %A ¸ß²ÊÇÙ %J - %D 1994 %U http://journal08.magtechjournal.com/Jwk_wjyx/CN/abstract/abstract12306.shtml