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图为肺的内部结构示意图图中所示肺泡外包围着毛细血管肺泡壁和毛细血管壁都很薄由一层上皮细胞构成这有利于 A．肺与外界的气体交换b Template






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tomski图为肺的内部结构示意图图中所示肺泡外包围着毛细血管肺泡壁和毛细血管壁都很薄由一层上皮细胞构成这有利于 a．肺与外界的气体交换b coloring
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高清图解：们的肺原来长这样的，一文带你看清肺部结构 澎湃号·湃客 澎湃新闻 The Paper sketch template
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