如果水很容易的留过岩石的孔，就是有渗透性，但是多孔性很低。这个文章也没有说说。
C. If water flows through a rock easily, it has permeability but low porosity.
研究添加成孔剂法制备的有球形宏观孔的多孔氮化硅陶瓷在不同孔隙率和孔径下的介电性能。
The porosity, pore diameter and solubility of ceramsite filter made by these two methods were analyzed and compared.
研究添加成孔剂法制备的有球形宏观孔的多孔氮化硅陶瓷在不同孔隙率和孔径下的介电性能。
The porosity, pore diameter and solubility of ceramsite filter made by these two methods were analyzed and compared.
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