So the effective porosity is drawn from the matrix volume and effective pore volume.

然后由岩样的有效孔隙体积和骨架体积计算出岩样的有效孔隙度。

The new domestic made catalyst was characterized by large pore volume and large pore diameter.

该催化剂具有大孔体积、大孔径等特点。

The pore volume of spherical aluminum oxide can be effectively improved by activated carbon powder.

活性炭粉能有效地提高球形氧化铝的压汞孔容。

The specific surface area and pore volume increase with carbon conversion during steam gasification.

不同孔隙率和比表面积的石油焦，其气化反应速率曲线变化趋势不同；

The effect of the pore volume and surface area of hydrotreating catalyst on its activity was studied.

考察了加氢精制催化剂的孔容和比表面对其活性的影响。