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Re:一道很好的数学题……In Reply To:一道很好的数学题…… Posted by:sweetsc at 2009-07-24 15:23:38 原来是坐标变换，反正是在一条线上，横坐标与竖坐标正交变换一下就一样了，我太笨了 Followed by: Post your reply here: |
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