古希腊数学家希帕克斯使用相似三角形定理估算地球半径为39443英里,具体计算过程是什么样的? 知乎 Template




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tomski古希腊数学家希帕克斯使用相似三角形定理估算地球半径为39443英里,具体计算过程是什么样的? 知乎 coloring