%0 Journal Article
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%A Öܸ´´º
%A ³Â»À´º
%A Îâ±ó
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%J ÉüÐóÊÞҽѧ±¨
%P 244-248
%D 2001
%U http://118.145.16.233/Jweb_xmsy/CN/abstract/abstract8496.shtml