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Carena: ½ð±Ò+1, ¸ÐлӦÖú£¬µ«ÊǸоõÕâ¸öÒëÎIJ»Õ¦×¨Òµ£¬ºÇºÇ 2012-11-01 14:59:04
Carena: ½ð±Ò+10, ·­ÒëEPI+1, ½ð±Ò´ú·¢ 2012-11-29 15:51:34
¹©²Î¿¼£ºthe distance from the focus to the directrix

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2Â¥: Originally posted by weichin at 2012-11-01 12:42:02
¹©²Î¿¼£ºthe distance from the focus to the directrix

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phu_grassman: ½ð±Ò+1, thanks for your time. 2012-11-07 13:53:43
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