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雖然我不明把你是什麼意思,但是橢圓雙曲線抛物線都屬於圓錐曲線把兩個圓錐尖對尖放在一起類似於兩個漏斗尖對尖的放置在豎直切圓錐時形成的是抛物線,斜切時形成的是橢圓但千萬要注意不與圓錐的斜邊平行,如果平行就成了抛物線了,不知對你有沒有用
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