名词
中文翻译：下底板衬里
同义词：
['under-floor lining', 'under-floor panel lining']
例句：
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1. The under-floor lining of the building is made of reinforced concrete.
这座建筑的底层是钢筋混凝土制成的。
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2. The under-floor lining is designed to provide insulation and soundproofing.
底层衬里设计用来提供隔热和隔音效果。
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3.The under-floor lining was installed during the renovation of the old building.
在老建筑翻新期间安装了底层衬里。