发布时间:2025-01-23 01:11:09
没多钱 团结路南段建材街 钢材市场院内就有卖的 几十(30-40)差不多 我买直径2.5x2.5的好像是18一根吧
请说出半穴居式和干栏式房屋各自的优点两点即可两种房屋结构的不同是由什么决定的说明了什么
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