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来自维基百科,自由的百科全书
上层建筑或上层结构、上部结构、附加结构、超结构(英语:Superstructure)指的是在现有结构的基准上向上扩展的结构[1]。该术语适用于各种物理结构,如建筑物,桥梁或工程学自由度为零的船舶等。
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