... 多孔混凝土管 perforated concrete tube 多孔混凝土排水基层 Porous Concrete Permeable Base 多孔混凝土砌块 cellular concrete block ...
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According to this, the paper puts forward a kind of new permeable base material, which is called porous concrete.
对此，本文研究一种新型的多孔混凝土排水基层材料。
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