Moderate increase of the duty ratio is benefit to the reductionofporosity.
适当提高占空比有利于减少气孔数量。
2
The experimental results show that, for a two-phase system with different porosityof porous media, the saturation is bigger with the reductionofporosity under the same capillary pressure;
试验结果表明，对于相同两相系统，多孔介质孔隙度愈小，同一毛细压力对应的饱和度相应愈大；
3
Experimental results showed that the structure, porosity and particle size of ludwigite ores have a significant effect on the reduction rate.