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探密：五角大楼建造背后的秘密 (组图)(4)

2007-05-28 10:37:42 国际在线　【大中小】发表评论

这是五角大楼最初的设计图纸，当时还被设计为不规则的五边形。基于可利用的土地面积和建筑形状的限制(正方形或矩形占地面积过大)，五边形被认为是这座大楼最佳的建筑形状。

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更多"五角大楼" 的相关消息

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五角大楼

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