The permeability constant k is expressed by Darcy's law as q/, where is fluid viscosity, q is linear rate of flow, and dp/dx is the hydraulic pressure gradient.
以毫达西铁磁性的(1/1000 达西)为单位进行测量。渗透常数 k 由达西定律表示为 q/，其中为流体粘度，q 为流体流动线速度，dp/dx 为液压梯度。
Our company can provide the products are: FB-PMS intelligent distribution system; Metal Exchange closed switch away counters, in exchange for removing metal closed switch equipment, household exchanges closed metal armoured away switching equipment, household Armored within the metal out of switching devices, and all low-voltage power distribution equipment; villa-speaking visual system; straight-speaking by video-networking systems; coding-speaking network visualization system; bus system standoff visual Talkback System; walkie-visual networking system; networking-speaking non-visual system; industrial thermocouple, heat resistance campaign, intelligent temperature figures show that the regulation instrument series, complete sets of control equipment; series of power products; series of special glass equipment; lamps; Ultra-pure water system; incubator series; oscillator series; water bath pot series; magnetic mixer series; electric mixer series of shredders; electric sets of series; baking machine dissolved wax machine; thermostat just electric Stainless Board Series; centrifuge series of experimental me series; oven series; incubators series; series of high-temperature sintering me; viscosity detector; box-type resistance furnace purification workstation series; chromatography series; Monitor Series; collection of family; Constant current pump series; chromatography columns series; gradient mixer series; vortex mixed-series; magnetic mixer series; rotary Evaporation Series; water distillation Series; series of medical equipment; sterilization equipment series; series of experimental equipment.
我公司能提供的产品有：FB-PMS智能配电系统；交流金属封闭型移开式开关柜、内交流金属封闭移开式开关设备、户内交流金属铠装封闭移开式开关设备、户内金属铠装抽出式开关装置，以及所有低压配电设备；别墅可视对讲系统；直按式联网可视对讲系统；编码式联网可视对讲系统；总线制防区可视对讲系统；准可视联网对讲系统；非可视联网对讲系统；工业热电偶、热电阻系列；智能温度数字显示、调节仪表系列；成套控制设备；系列电源产品；特种玻璃仪器系列；灯具等；超纯水系统；培养箱系列；振荡器系列；水浴锅系列；磁力搅拌机系列；电动搅拌机系列；粉碎机系类；电热套系列；烤片机溶蜡机系列；调温不锈刚电热板系列；离心机系列；实验箱系列；干燥箱系列；恒温箱系列；高温烧结箱系列；黏度测定仪；箱式电阻炉净化工作台系列；层析仪系列；检测仪系列；收集器系列；恒流泵系列；层析柱系列；梯度混合器系列；旋涡混合仪系列；磁力搅拌机系列；旋转蒸发器系列；纯水蒸馏器系列；医用设备系列；灭菌设备系列；实验仪器系列。
Due to the temperature-dependent physical properties of the fluid including viscosity, relative dielectric constants, electric conductivity, and thermal conductivity, the induced temperature gradient imposes great influence on flow behaviors of channels.
由于流体的介电常数、电导率、粘性、热导率等属性依赖于温度的变化，焦耳热效应产生的温度场会改变流体的多种属性，并进而影响到流动速度、压力分布等。
On the resulting shrinkage of failure, a specific procedure has been completed in the business card printing and membership card making ink in leveling agent themselves; solvent with low surface tension; one's studies on the substrate surface wettibility processing, such as business card printing and membership card with solvent before making the substrate material surfaces lotion; II control business card printing and membership card making job environment temperature and humidity; select a suitable explanation by the agent; reducing business card printing? and membership card making ink and printer surface tension between the carrier, so that the ink and carriers have good wetting and that it will not cause shrinkage of substances between surface tension adjustment gradient; sadly, solvent evaporation rate, reducing the viscosity to improve the mobility of ink, to extend the leveling time; ⑧ in the packaging business card printing and membership card making ink ink very thin membrane surface monolayer to provide stable and homogeneous surface tension.
对此产生的缩孔故障，具体的做法是：①在制卡和会员卡制作油墨里适当加入流平剂；②采用低表面张力的溶剂；③对承印物表面进行润湿处理（如制卡和会员卡制作前先用溶剂将承印物材料表面进行抹擦）；④控制制卡和会员卡制作作业的环境温度及湿度；⑤选择适宜的解释剂；⑥降低制卡和会员卡制作油墨与承印载体之间的表面张力，使油墨与载体具有良好的湿润性使其不致于与引起缩孔的物质之间形成表面张力梯度）；⑦调整溶剂蒸发速度，降低粘度，改善油墨的流动性，延长流平时间；⑧在包装制卡和会员卡制作油墨墨膜表面形成极薄的单分子层，以提供稳定而均匀的表面张力。
7 A porous medium has a permeability of one darcy when a single phase fluid of one centipoise viscosity that completely fills the voids of the medium, will flow through it under conditions of viscous flow at a rate of one cubic centimeter per second per square centimeter cross sectional area under a pressure or equivalent hydraulic gradient of one atmosphere per centimeter.
答案：当粘度为 1 厘泊的单相流体被完全充满-多孔介质的孔隙时，在粘滞性流体以 1 立方厘米每秒或每平方厘米的相当于每厘米一个大气压的水力梯度通过时，该介质的渗透率为 1 达西。
Two mathematic models for describing the relationship of hydraulic pressure gradient and drag reducer concentration with the flow rate and viscosity of crude oil and the diameter of pipeline were established.
首先建立了加减阻剂后水力坡降和减阻剂浓度与原油流量、粘度及管径关系的两个数学模型。
The results show that the increasing Marangoni number will lead to more nonlinear distribution of temperature field, but streamfunction of the cell center; vorticity on the wall and peak value of velocity diminish first, then increase, finally lose stability. The thermocapillary convection in the whole liquid zone appears to get stronger along with the augmentation of Prantal number. The effect of increasing of Biot number on temperature and flow fields is not obvious although the convection is strengthened a little. As increasing the aspect ratio A, thermocapillary convection induced by temperature gradient and liquid viscosity becomes stronger.
结果表明：温度场的非线性分布随着Ma数的增大而加剧，但对流涡胞中心流函数、壁面涡量和轴向、径向速度峰值并不象温度场随着Ma数的增大而单调增大，而是先减小，然后增大，最后失稳，表明Ma数对热毛细对流的影响比较复杂，针对不同的物理模型，会导致完全不同的流态；Pr数愈大，流体的热扩散能力在粘性扩散与热扩散能力之比中愈占支配地位，当Ma数一定时，热毛细对流随Pr数的增大在整个液体区域内有增强的趋势；Bi数增大，热毛细对流有所增强，但不甚明显；A的增大使得由温度梯度和流体粘性诱导的热毛细对流随之增强。
Based on the assumption that the porous medium consists of a bundle/set of tortuous streamlines/capillaries and on the fractal characteristics of pore size distribution in porous media, we develop the fractal expressions for flow rate, hydraulic conductivity and apparent viscosity for Power-law fluid flow in a single capillary, we develop the fractal expressions for flow rate, velocity, apparent viscosity and effective permeability for Power-law fluid flow in porous media, and develop the fractal expressions for flow rate, velocity and starting pressure gradient for Bingham fluid flow in porous media.
考虑到实际毛细管的弯曲性和毛细管管径的分形分布，给出了单毛细管中幂律流体的流量、水力传导系数和视粘度的分形表达式；给出了多孔介质中幂律流体的流量、流速、视粘度和有效渗透率的分形表达式；给出了多孔介质中宾汉姆流体的流量、流速和启动压力梯度的分形表达式且详细分析了启动压力梯度的影响因素。
The key factors are the ratios of yield point to plastic viscosity of both drilling muds and cement slurries and the pressure gradient of displacement flow.
影响偏心环空注水泥顶替效率的关键因素是泥浆、水泥浆的动塑比和顶替流动压力梯度。
A blood viscosity " Quality Control Substance " was studied for 3 years continuously for the apparent viscosity values, the curve gradient of viscosity versus shear rate, Casson yield stress and Casson viscosity, we found that above parameters decrease according to time going on.
对于一种血液粘度质控物进行了连续3年的表观粘度、剪切稀化曲线陡度、卡松屈服应力和卡松粘度的观察，发现该物质随着时间的进程上述参数逐年变低；
Foamed ceramics with gradient pores used raw materials of clay A, talc and industry alumina were prepared by adjusting slurry viscosity and choosing precursor with different size pores at 1270 ℃. Dipping method was adopted.
利用粘土A、滑石和工业氧化铝为原料，通过调整泥浆的粘度及选择不同孔径的前驱体，采用浸渍有机前驱体成型法，在1270℃下制备出了具有孔梯度的泡沫陶瓷制品。
Through large amount of lab experiments, the relation of oil boundary layer thickness with capillary radius, pressure gradient, fluid viscosity and its composition has been discussed.
摘要通过大量的室内实验，探讨了原油边界层厚度与毛管半径、压力梯度、流体粘度和组分的关系。
The maim factors affecting the velocity profiles are the viscosity near the bed, particle grid resistance and the density gradient.
影响流速分布的主要因素有底部粘度、颗粒格栅阻尼和密度梯度。
The calculation results showed that the axial velocity, tangential velocity, resultant velocity and pressure gradient increased with the increment of the rotation speed of pumping rod, while apparent viscosity reduced with it.
计算结果表明，井液的轴向速度、切向速度、合速度及压力梯度随抽油杆转速的增加而增加，视粘度随转速的增加而减少。
A viscosity modified method and a coefficient modified method are used to treat the initial pressure gradient.
采用粘度校正法和系数校正法对采油参数进行了计算，并引入了初始压力梯度项。
Experiments on separation of chromium-containing residue from the chromate leach liquor were carried out by using a high gradient magnetic separator. The dependence of the effective separation time upon viscosity, magnetic field intensity and flow velocity was examined.
应用高梯度磁分离装置对铬盐浸出浆液中的铬渣进行了实验分离，测量了有效分离时间与流体粘度、磁场强度和流体流速之间的关系。
Using the calculation results of the dispersion equation of a moving liquid sheet with viscosity and temperature gradient, the effect of dimensionless numbers on the breakup scale of liquid sheets is studied.
利用线性不稳定性理论对加热条件下粘性液膜射流模型所对应的色散方程进行了数值求解。利用得到的计算结果研究了加热条件下无量纲数对液膜射流破碎尺度的影响。
The low surface tension and low viscosity of aluminum alloys are the reason that the change of surface tension temperature gradient is not the main mechanism of activating flux increasing weld penetration of activating TIG welding.
而铝合金材料表面张力小，粘度低，是导致表面张力温度梯度改变不是活性剂增加铝合金活性TIG焊熔深的主要机理的重要原因。
The neural network is 4-7-1 BP structure, and the factors of influencing wax deposition rate include the shear stress, temperature gradient and molecular concentration gradient at pipeline wall, and dynamic viscosity of the crude oil.
该模型结构为4-7-1的三层BP网络模型，它考虑了管壁处的剪切应力、管壁处温度梯度、管壁处蜡分子浓度梯度和原油的动力黏度对管道蜡沉积速率的影响。
The pressure gradient of core is used in calculating the capillary number, which avoids the influences of viscosity of driving fluid and permeability of porous media.
利用驱替过程中岩心两端的压力梯度计算毛管数值，有效的避免了驱替液粘度和渗透率等因素的影响。