1·Sediment sorting and compaction influence permeability and porosity.
沉积物的分选和压实作用影响渗透率和孔隙度。
2·The more poorly sorted or the more tightly compacted a sediment is, the lower its porosity and permeability.
沉积物分选越差或压实越紧，其孔隙度和渗透率就越低。
3·Extraction of water depends on two properties of the aquifer: porosity and permeability.
水的开采取决于含水层的两个性质：孔隙度和渗透性。
4·With their enormous size and weight, today's farm machines have significant downsides: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.
由于庞大的体积和重量，现在的农业机械有显著的缺点：它们会把土壤压实，降低土壤孔隙度，杀死有益的生命，这意味着农作物不会长得太好。
5·Medium and large cells should have the same porosity, primarily in M2.
中型和大型单元都有相同的孔隙度，主要都是在M2层。
1·Results indicate that RPC possesses very low porosity and its air permeability is lower by 1-2 magnitudes than that of conventional concrete.
结果表明：RPC具有非常低的孔隙率，其气体渗透系数比传统混凝土的低1 ~ 2个数量级。
2·Tests show that coal with larger porosity, lower strength and higher velocity of gas desorption is more dangerous in hazard of outburst.
试验表明突出危险煤较非危险煤孔隙率大，强度小，且具有更大的瓦斯解吸速度。
3·Metallic foams are new engineering materials with high porosity.
金属泡津材料是一种高孔隙率的新的工程材料。
4·The study result was verified by porosity testing.
分析结论通过孔隙率检验得以证实。
5·Experiments show that the accurate equation can express the relationship of porosity and bulk modulus of porous medium well.
试验结果表明，精确公式能够很好地表达多孔介质孔隙率与体积模量之间的关系。