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fanbao_keke(feixiaolin´ú·¢): ½ð±Ò+6 2014-10-31 07:41:50
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feixiaolin

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fanbao_keke

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2Â¥: Originally posted by feixiaolin at 2014-10-26 20:13:06
http://en.wikipedia.org/wiki/Bessel_function

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feixiaolin

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