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 <title><![CDATA[科普文章：纽结]]></title>
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 <description><![CDATA[Latest 20 replies of 科普文章：纽结]]></description>
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 <description><![CDATA[我看到的一篇文章里还简单讲了化简knot的3种方式:
[quote]
[i][b][url=http://www.freelearning.com/knots/intro.htm]Introduction to Know Theory @ freelearning[/url][/b][/i]
...
3) How do we work with knots? (The Reidemeister moves) 

In 1926, Kurt Reidemeister (ride-a-my-stir) proved that if we have dif ..]]></description>
 <link><![CDATA[http://doggiehome.com/read.php?tid=4398#33963]]></link>
 <author><![CDATA[galilette]]></author>
 <category><![CDATA[科学人文 Scientific & Humanistic Cultures]]></category>
 <pubdate><![CDATA[Fri, 14 May 2004 14:59:29 +0000]]></pubdate>
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