英语词汇“porous fill”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	porous fill
释义	porous fill drainage fill 1.Lightweight concrete which is placed on roofs or floors to promote drainage. 2. A base course of granular material placed between a sub-grade and floor slab to retard the capillary rise of moisture.
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porous fill