porous AAO多孔氧化铝porousadj.可渗透的；多孔的porous layer open tubular column多孔开口管柱porous cemented carbide material硬质合金多孔材料Porous anodic alumina oxide film多孔阳极氧化铝膜Porous layer open tubular columns多孔层开管柱porous powder metallurgy material多孔粉冶材料Porous calcium phosphate ceramics多孔磷酸钙陶瓷porous zeolite granular adsorbent多孔质天然沸石porous branch rotating draft tube开孔支管旋转导向管porous and hierarchical structure多孔有序结构porous medium with large porosity大孔隙多孔介质

1. An underground bed or layer of earth, gravel, or porous stone that yields water.
   地下蓄水层，砂石含水层含有水的泥、砂砾或多孔石的地下河床或地层