The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。
The results show that the degree of hydration of fly ash-cement paste is higher and the porosity is lower than pure Portland cement paste in late ages.
结果表明，与纯硅酸盐水泥相比，粉煤灰水泥水化后期的水化程度较高，浆体总孔隙率较低。
Based on the core and logging data, this paper analyses and evaluates density of seams, opening degree, porosity, permeability and seam spacing in the Tazhong area.
本文结合岩心、测井等资料，对塔中裂缝的密度、开启程度、孔隙度、渗透率、连通性与裂缝间距等参数进行了分析与评价。
The study shows that:porosity development degree and permeability of coal have good consistency, and the permeability increases as the porosity development degree increases;
试验研究表明：煤体孔隙发育程度与渗透率具有较好的一致性，渗透率随孔隙发育程度的增高而增大；
The inter-porosity flow factor and the elastic storativity ratio determine the occurrence time and the degree of the inter-porosity flow.
窜流系数和裂缝弹性储容比的变化决定了窜流段发生的早晚和程度；
When water saturated degree is above critical value, the mechanical features of sandstone with large porosity are changed clearly.
在油水转化过程中，也存在一临界饱和度，超过此临界饱和度，其力学特性发生较大的改变。
So, the porous absorber works as thermal insulator in a degree without solar shining. The influence of the particle size and the porosity within the porous…
多孔介质的空隙率、粒径大小对系统的采暖效果影响较大。
So, the porous absorber works as thermal insulator in a degree without solar shining. The influence of the particle size and the porosity within the porous…
多孔介质的空隙率、粒径大小对系统的采暖效果影响较大。
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