对此，本文研究一种新型的多孔混凝土排水基层材料。
According to this, the paper puts forward a kind of new permeable base material, which is called porous concrete.
多孔混凝土是一种性能良好的新型道路基层材料，相应的多孔混凝土排水基层沥青路面是一种新型的路面结构。
Hollow concrete is a well performance novel road base material, and the corresponding asphalt pavement with hollow concrete water drainage substrate is a novel road pavement structure.
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