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Re:^_^In Reply To:^_^ Posted by:pladene at 2004-10-19 10:43:09 用压强证明啊 肯定是3个半径相同的圆弧，而且和三边都相切啊 > 想象一滴水，呵呵:) > 这个我知道。 > > 可是总感觉不是那么严密。。。。 > 可否说的详细一点:) Followed by:
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