Pervious concrete and porous asphalt are not considered open grid as they are considered bounded materials.

透水混凝土和多孔沥青不被认为是开放式网格，而是有边界材料。

youdao

Pervious concrete and porous asphalt are not considered open grid as they are considered bounded materials.

透水混凝土和多孔沥青不被认为是开放式网格，而是有边界材料。

youdao