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The analysis of the experimental curves shows that ,the larger the size of the madia,the lower is its gamma -field and the higher its attenuation ratio;with the increasing temperatureof the media, the absorbent of gamma - ray and the attentuation ratio increase.

经试验的数据曲线分析表明,介质粒度越大,其γ场降低,衰减率高;而介质的湿度越大,介质对射线的吸收量增高,衰减率增高。

The inversion of large perturbational parameters in elasticmedium is one of important branch of the medium parameters inversion because ofits extensive engineering application background and the breaking down of thelimited condition in traditional inversion method.

介质参数反演问题是弹性动力学反问题三大研究方面之一,弹性介质中的大扰动参数反演问题作为介质参数反演的一个重要分支,因其广泛的工程应用背景以及对传统反演方法限制条件的突破而具有重要的意义。

The main contents and some most important results are as following. On the basis of experience from extensive literature survey and visiting some relevant known research institute, the volumetric method is chosen for measuring the adsorption isothermal in reservoir cores in the end, after a basic evaluation experiment using a porosimeter.

本文的主要研究内容和所获得的重要结论如下·在广泛文献调研和实地走访国内知名科研院所的基础上,结合储层介质气体吸附特点,初步选定恒体积法作为储层介质气体吸附的测试方法,并利用一台孔隙度测试仪对该方法进行了可行性研究,研究的结果进一步确定了这种方法对储层介质气体吸附测试的可行性。

The minimum traveltime algorithm for isotropic media is generalized to for TI media according to the basic theory of elastic waves in anisotropic.

基于各向异性介质弹性波基本理论,把各向同性介质中的最小旅行时树法推广到横向各向同性介质中。

In chapter 2, we focus on derivation of the tortuosity models for flow of Newtonian incompressible fluid in two- and three-dimensional porous media with spherical, cubic and plate-like particles by applying the geometrical method. We first present the ideal geometrical models of porous media to show the ideal and representative streamlines based on the assumption that some particles in porous media are unrestrictedly overlapped and hence of different configurations, then the average tortuosity is derived by geometrically and weightedly averaging these representative flow paths.

第二部分采用几何分析法研究了二维和三维情况下的球形颗粒、立方体颗粒和板状颗粒多孔介质中流体流线的迂曲度,首先给出多孔介质的理想几何模型,通过分别考虑固体颗粒重叠时、不重叠时以及粒子的不同排列等情形时的流体流线,然后对这些理想代表性流线的迂曲度取几何平均和加权平均,最后推导出流体流过多孔介质的迂曲度解析表达式。

The relations between the parameters of the saturated porous micropolar theory and those of the corresponding one_phase medium are established by means of the Greetsma theory. It has merits that the physics parameters in our dynamic equations of the saturated porous micropolar medium have a definite physics meaning and are easy to be tested in laboratory.

借鉴Greetsma理论,建立了饱和多孔微极介质弹性本构方程力学参数与相应单相介质弹性参数的相互关系,使饱和多孔微极介质弹性波动方程中的物理参数具有明确的物理意义,易于在试验中确定。

When the porous solid skeleton is approximately taken as a micropolar medium and the fluid in the pores a point medium, the elastic pragmatic wave equations in a saturated porous micropolar medium are obtained from the results of the micropolar theory and those of Biot's pragmatic wave theory.

利用微极理论和Biot波动理论的研究成果,把饱和土中多孔固体骨架部分近似地视为微极介质,孔隙中的流体部分视为质点介质,获得饱和多孔微极介质的弹性波动方程。

It deals with the motion and deformation, thermodynamics and constitutive relationships of continua.

连续介质力学主要研究连续介质的变形和运动、连续介质热力学和本构关系。

14KV,0.0067uF. One advantage of these capacitors is that they have a self healing dielectric, so they can run closer to their maximum design voltage and suffer voltage surges without any permanent damage; if a dielectric punch trough occurs the metalized layer on the polypropylene dielectric vaporizes around the arc and the capacitor continues to work with only a slight decrease in its capacitance...

这些电容器的一个优点是,它们具有自我修复介质,这样他们就可以运行更接近其最大设计的电压和受害而没有任何永久性损害电压浪涌,如果发生介质冲槽上一层金属化聚丙烯弧周围介质蒸发和电容继续工作,只有在其电容略有下降。。。

Through carrying on nitrifying potentiality dynamics analysis of the substrate artificial medium in the ecological floating bed, find substrate artificial medium nitrifies approximate to be zero response. the dynamics equation is y =-0.1347x+4.3542, the artificial medium nitrifying potentiality is 3.4×10-5g/h·slice.

通过对生态浮床底层人工介质的反硝化潜力进行动力学分析,发现底层人工介质的反硝化近似为零级反应,动力学方程为y=-0.1347x+4.3542,人工介质反硝化潜力为3.4×10~(-5)g/h·片。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。