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八年级数学：D、E是动点，怎么求DA+DE的最小值？将军饮马经典题
八年级数学：D、E是动点，怎么求DA+DE的最小值？将军饮马经典题
初中数学：几何最值，将军饮马，费马点，胡不归，隐形圆，阿氏圆174/333
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