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shichunqin(½ð±Ò+9):555£¬ÔõôÕâô¼òµ¥D~~~ 2011-01-01 21:42:36
(1)

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¡àAM = BN

(2) ´ËʱÓÐ

¡ÏAPM = ¡ÏAPB + ¦Á = ¡ÏMPN +¦Á = ¡ÏBPN
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[ Last edited by Pchief on 2011-1-1 at 21:17 ]
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