... C3 rubble concrete C3 片石混凝土 concrete substructure 混凝土下部结构 C25 underwater concrete C25水下混凝土 ...
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concrete substructure
混凝土底座
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In a radical experiment which he called "building without foundations", he skipped the concrete substructure and instead built the guest wing on a pre-existing natural rock formation.
BBC: An Alvar Aalto tour of Finland
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