The porosity loss caused by cementation is 25.8% and 27.5% of the total porosity for the Chang 1—Chang 3 sandstones and the Chang 4+5—Chang 10 sandstones, respectively.
胶结作用导致长1—长3和长4+5—长10砂岩丧失的平均孔隙度分别占原始孔隙的25.8%和27.5%，碳酸盐是造成砂岩物性降低的主要胶结物。
This pore space is known as porosity and is expressed as a percentage of the total rock volume.
这个孔隙空间被称为孔隙度，用岩石总体积的百分比表示。
First, an empirical relationship formula between the effective porosity and total porosity of cement paste is given based on the experimental results of concrete.
首先，根据混凝土的试验结果给出了水泥石有效孔隙率与总孔隙率关系的经验公式。
Compared to Stipa Bungeana grassland and fallow ground, the volume weight was smaller, total porosity and capillary porosity were higher, but non-capillary porosity was lower.
芨芨草草地土壤容重较本氏针茅草地和裸地小，各层的总孔隙度和毛管孔隙度明显高于本氏针茅草地和裸地，但非毛管孔隙度较本氏针茅草地和裸地低。
The study shows that the total drags acting on a hollow block are affected by the porosity in the same flow condition , that is, the bigger the porosity is, the smaller the drag force is.
实验研究表明，对于不同的空心块体，在相同的水流条件下，受到的水平拖曳力随块体的空心率影响较大，呈现空心率越大，水流拖曳力越小的变化规律。
Geochemical pyrolysis-FID Logging can measure the total hydrocarbon contents, estimate oil density, and calculate oil saturation when combine with reservoir porosity and rock density.
热解地化录井可以检测储集层含油气总量，推算原油密度值，结合储集层孔隙度值和储层岩石密度，经过换算可得出含油饱和度。
The results were as follows:Compared with conventional flooded paddy soils, rain fed and mulching plastic film slightly reduced bulk density, increased total porosity of the soils.
与常规水作相比，覆膜旱作稻田土壤容重有所下降，总孔隙度增加显著；
Upward along the slope, soil pH value, organic matter content, total porosity and capillary porosity increase, and soil bulk density decreases.
土壤容重沿坡面向上减小可能主要与土壤有机质含量、粘粒含量、结构状况和松紧度以及孔隙度状况等有关。
Upward along the slope, soil pH value, organic matter content, total porosity and capillary porosity increase, and soil bulk density decreases.
土壤容重沿坡面向上减小可能主要与土壤有机质含量、粘粒含量、结构状况和松紧度以及孔隙度状况等有关。
应用推荐