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你如果用平行于圆锥中心线并且和屏幕垂直的平面去截圆锥，就能用到其他公式了In Reply To:这道题的体积公式是不是 1/3*弓形面积*H? Posted by:tasty at 2013-01-05 23:58:56 Followed by: Post your reply here: |
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