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压力
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     Particular process is like that:1. select five reservoir parameters (cumulative thickness,temperature,effective porosity and permeability,pressure) and three crude oil parameters (saturation,viscosity and density)as characteristic parameters;
     具体过程为(1)选取储层参数(累积厚度、温度、有效孔隙度、有效渗透率、压力)和原油参数(含油饱和度、地下原油粘度和密度)等8个参数作为特征参数;
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     The test result shows that by the action of the external field force, which is in the derection of 290°and uniformly distributed compression, the range of regional stress concentration near Nanao is largest;
     结果表明:本区在290°方向的外场力(压力)作用下,南澳附近区域性应力集中范围最大;
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     Applying the Laplace transform and numerical inversion method,a new pressure drawdown welltesting interpretution chart with variable wellbote stotage coefficient is developed, which is a combination chart of pressure and pressure derivative taking βDe2s as the changing perameter, whose abscissa is td/βD (tD is dimensionless time, βD is dimensionless attenuation factor), whose ordinate is PD (dimensionless pressure) and P'D· tD/βD(P'D is dimensionless pressure derivative).
     该图版是以tD/βD(无因次时间/无因次衰减系数)为横坐标,以PD(无因次压力)和P'D·tD/βD(P'D为无因次压力导数)为纵坐标,以βDe2S为参数团的一组压力和压力导数曲线的组合图版。
短句来源
     Electron microscopy, X-ray diffraction, nitrogen adsorption and potentiometric acid-base titration were used to evaluate the properties of the microparticles. The results indicated that the inorganic particles obtained can be used as packing material for HPLC because of their desired pore size(TiO2 5. 8 nm, TiO2-ZrO2 7. 4 nm), particle shape and relatively narrow particle size distribution(4-6 μm)with high mechanical and chemical stability.
     用扫描电镜、X-粉末衍射、氮吸附法等方法研究了这两种氧化物微球的物理化学性质,表明所制得的多孔微球粒径分布窄(4-6μm),孔径在中孔范围内(TiO5.8nm,TiO2-ZrO2 7.4nm),机械性能良好(可承受41Mpa压力),完全满足高效液相色谱的需要.
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     The rheological models and calculation method applied at abroad and domestic as well as the rheological characteristics of the slurry and the major factors (temperature and pressure) related to the rheology were appraised comprehensively.
     本文就国内外水泥浆流变模型、计算方法、流变特性及其主要影响因素(温度和压力)进行了综合评述。
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     pressure;
     压力;
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     The Study on the Pressure
     论压力
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  pressure)
In this article we investigate the asymptotic behavior of and using the dynamical system techniques: the pressure function and the variational principle.
      
An algorithm to calculate the pressure is presented.
      
The reported method1 of their synthesis involves hydrogenation at high temperature and pressure.
      
Invariant of topological pressure under some semi-conjugates
      
In this paper, the topological pressure is preserved under some semi-conjugates, and a formula of computing topological pressure by use of periodic points for positively expansive continuous map with specification is given.
      
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The dielectrie constants of toluene, carbon bisulphide, normal pentane, normal hexane, ethyl ether and iso-amyl alcohol were measured by a capacity bridge using a specially constructed liquid condenser at both 30° and 75℃ (22.4℃ only for the last liquid), for frequencies of 600,1000 and 2000 cycles per sec. and under pressures from 1 up to 12,000 kg/cm2. For the first four liquids, the dielectric constant is practically independent of the frequencies

作者用一电容桥及一特制之液体蓄电器以量甲苯,二硫化碳,正戊烷,正己烷,乙醚,及异戊醇之比电容。所用温度为摄氏三十及七十五度(异戊醇之温度仅为二十二度四),频率为每秒六百,一千及二千周,压力自一气压高至一万二千气压。前四液之比电容几与所用频率无关。(ε-1)/(ε+2)·1/d,(ε-1)/d及(ε~(1/2))-1/d三式中以第一式最近一常数,然压力渐增第一式之值恒随之而渐减,至一万二千气压时(在甲苯为九千五百气压),其减少约数在甲苯及二硫化碳为百分之三,在乙醚为百分之八,在异戊醇为百分之十九,显随电矩之增加而增加,至其原因篇中亦略加说明。 篇中图表惠蒙同事朱福炘先生代为抄绘,附誌谢忱。

The effect of pressure on photographic sensitivity is discussed on the experimental basis that the quantity E/EC, where E is the illumination actually used when the photographic emulsion is under pressure, and Ee the illumination which would be required to produce the same optical density when the emulsion is under no pressure, is a function of pressure only and that for pressures greater than a certain value, E/Ee becomes a linear function of the pressure.

当照相时,照相片子——映像纸,软片,或玻璃板——被压,则其感光性减弱,是为照相的压力效应。设E为照相片子在压力P下得光密度d所需之光照度,若片子不受压力则用光照度E_e即可得此同一之光密度d,故E_e可称在压力P下E之有效照度。吾人实验证明E/E_e为压力P之函数,当p>200kg/cm~2时,E/E_e与P成正比例。 此照相的压力效应,与照相时所用光之颜色,极有关系。黄色光较绿色光为显,绿色光较蓝色光紫色光为显至紫外光则几无此效应。 又此效应之大小,随各种照相片子而不同。就我们所研究的蔡爱斯伊康正色软片,伊司门人像软片,和矮克发等色软片而论,以第一种为最大第二种次之第三种为最小。 这个效应,在实际上,或可有些应用。

The thermodynamic functions of an ideal subetance represented by van der Waals equation are obtained with the help of the condition that these functions reduce to those of a perfect gas in the limiting case of vanisning prassure. The volumes of the liquid state and gas state in coexistence as determined by Maxwell's rule of equal areas are expressed in a parametrie form. The nature of the dependence of the constants a and b on the chemical composition of the gas is briefly considered.

任何气体在压力极小时皆变为理想气体。今利用此点以求一凡得瓦尔气体之各种热力学函数。当气体与液体同时存在时,其由等面积法所定各自之体积,今以参数表之。最后约略言及a,b二常数与气体化学组成之关系。

 
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