定量分析对井回灌过程中回灌井周围渗流场变化，渗透系数呈指数衰减。
The permeability coefficient of the seepage field changes in the exponent attenuation.
经改进配方，处理的排污水的污泥密度指数(SDI)小于5.0，能够满足后续反渗透单元的进水要求。
Sludge density index (SDI) of effluent treated by improved formula is below 5.0, and it would meet the quality requirement of the influent of following reverse osmosis unit.
数值计算了该模型系统渗透率在临界点处的标度指数。
The scaling exponents of the permeability are calculated at the percolation critical point.
其主要作用是降低原水的污染指数和余氯等其他杂质，达到反渗透的进水要求。
Its main role is to reduce the raw water pollution index, and residual chlorine and other impurities, to reverse osmosis water requirements.
实验结果表明，热处理条件对复合膜的分离选择性、渗透通量及分离指数具有明显影响。
Experiment results show that heat treatment conditions have remarkable effects on the permselectivity, permeability and pervaporation separation index.
作者通过统计文南油田的水敏试验资料，找出了水敏指数与岩石空气渗透率和注入水矿化度的关系。
By comparing the experimental data of water sensitivity in Wennan oil field, a relationship among water sensitive indexes, rock air permeability and salinity of injected water was set up.
两组岩样在温度作用下渗透率都服从指数函数增加，并存在温度门槛值。
The permeability under temperature function of two groups of rock specimens obeys exponential function to increase, and the threshold value of temperature exists.
基于反渗透原理，以89c52单片机为控制器，设计了水污染指数中的淤积密度指数(SDI)的自动在线测试装置。
Based on principle of reverse osmosis and used microcomputer 89c52 as controller, an automatic detection instrument of sludge density index (SDI) of water pollution is designed.
试验结果表明该类岩心的孔隙度和渗透率随压力增大呈近指数规律下降。
It is concluded that porosity and permeability of the core are declined with the increase of pressure.
基于渗透率随压力呈指数变化规律，建立了任意形状应力敏感性双重介质油藏不稳定渗流的数学模型。
Based on the law of permeability changing with pressure, a mathematical model is established for unsteady percolation in dual-porosity reservoirs with arbitrary shape of stress sensitivity.
火山岩气藏启动压力与束缚水饱和度和空气渗透率均呈幂指数关系；
The starting pressure of volcanic gas reservoir shows exponential relationship with irreducible water saturation and air permeability.
然后通过回归分析，可以发现该地区渗透系数随地应力值的增大呈负指数递减的变化规律。
By nonlinear regression analysis the change law is found that with the increase of geostress the permeability coefficient will decrease with negative exponential trend.
结果表明，多孔介质中甲烷水合物的存在会导致其渗透率急剧下降，饱和度-渗透率曲线呈指数分布。
The result shows that the existence of methane hydrate in porous media can cause a sharp decline in its permeability, and saturation-permeability curve obeys exponential distribution.
卸围压开始后煤岩在应力平台阶段的渗透率与卸围压时间呈指数函数关系。
During the unloading process of confining pressures, the permeability of coal being in the stage of stress flat roof showed an exponential function with the corresponding time.
卸围压开始后煤岩在应力平台阶段的渗透率与卸围压时间呈指数函数关系。
During the unloading process of confining pressures, the permeability of coal being in the stage of stress flat roof showed an exponential function with the corresponding time.
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