Moderate increase of the duty ratio is benefit to the reduction of porosity.
适当提高占空比有利于减少气孔数量。
The experimental results show that, for a two-phase system with different porosity of porous media, the saturation is bigger with the reduction of porosity 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；
Experimental results showed that the structure, porosity and particle size of ludwigite ores have a significant effect on the reduction rate.
实验结果表明，矿石结构、孔隙度和颗粒的大小对还原率有明显的影响。
So, there may exist the phenomenon of permeability reduction with the porosity increase.
因此，可能存在孔隙率增加而渗透性降低的现象。
Fluids in the pores will be expelled as the reduction in porosity occurs during the process of compaction of the mudstones.
泥岩压实过程中，随着孔隙度降低，孔隙中流体被排出。
Fluids in the pores will be expelled as the reduction in porosity occurs during the process of compaction of the mudstones.
泥岩压实过程中，随着孔隙度降低，孔隙中流体被排出。
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