然后由岩样的有效孔隙体积和骨架体积计算出岩样的有效孔隙度。
So the effective porosity is drawn from the matrix volume and effective pore volume.
前后两次重量的差值除以流体密度就得到样品中连通孔隙（也就是有效孔隙）的体积。
The difference in weight divided by the density of the liquid is the connected, or effective, pore volume.
试验结果验证了砂土液化典型特征：超静孔隙水压升高，有效应力降低，体积压缩积累增大。
Experimental results show the typical characteristics of soil liquefaction: excess static pore-water pressure increases, effective stress decreases, and volumetric strain increment increases.
核磁共振测井可以准确地提供地层的自由流体体积和束缚流体体积、有效孔隙度及其渗透率，能较好地判断干层、水层及气层。
NMR Logging can provide accurate values of irreducible liquid, movable liquid, effective porosity and permeability, and also identify the tight zone, water zone and gas-bearing zone.
核磁共振测井可以准确地提供地层的自由流体体积和束缚流体体积、有效孔隙度及其渗透率，能较好地判断干层、水层及气层。
NMR Logging can provide accurate values of irreducible liquid, movable liquid, effective porosity and permeability, and also identify the tight zone, water zone and gas-bearing zone.
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