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Deep well drillstring is scatter to umpty dimensional beam unit along axes. Lengthwise vibration equation of whole drillstring is found with three-dimensional dynamic finite element method. With this equation and improved Ritz Vectors, dynamic response analysis and calculation of drillstring is carried out, also, the method of vibration model splice is used.

将深井钻柱沿轴线离散为若干个空间直粱单元,用三维动力有限元法进行振动分析,得到整体钻柱结构的纵向振动方程,用改进的Ritz向量法及振型迭加法对钻柱进行动力响应分析和计算。

When data are balanceable, two methods should have no difference, but the standard error computed by two-level model is bigger than that by generalized estimating equation. When data were unbalanceable, generalized estimating equation shows somewhat advantage. Type 2 diabetes mellitus might exist genetic heterogeneity and there is no gene that is related with the occurrence of bipolar disorders.

当数据平衡时,两者结果一致,但多水平模型计算出的标准误大于广义估计方程算出的标准误;当数据不平衡时,两者结果不一致,广义估计方程更能检测出有统计学意义的基因位点。

According to the experimental data,using the best square approach way,the linear extent magnetostriction properties equation of Terfenol-D material is made,then the magnetostriction properties equation under a unconstant preloading is educed.

根据实验数据,利用最佳平方逼近的方法,确定了Terfenol-D材料线性范围内的磁致伸缩特性方程,并进而得出了变载荷磁致伸缩特性方程。

Considering that thermodynarmic irreversibility and hydrodynamic equations can not be derived rigorously and unifiedly from the Liouville equations, the anomalous Langevin equation in the Liouville space is proposed as a fundamental equation of statistical physics.

考虑到热力学不可逆性和流体力学方程不能严格统一地从刘维方程推导出,本文提出了刘维空间的反常朗之万方程作为统计物理的基本方程。

Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equationwith τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed.Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.

本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论,以华北原油为研究对象,结合原油物性及实验影响因素分析,制定出实验研究的评价指标及实验方案;从连续介质力学宏观分析的角度,利用HAAKE RS600高端旋转流变仪开展了大量的室内实验,并运用微观研究方法,测定了油样的流变曲线和粘温曲线,建立了流变方程和粘温方程;通过对触变性机理和触变性流体特征的研究,首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线,并在理论研究和实验结果的基础之上,建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c,该模型具有精度高、参数少、实验简便且适用性强的特点;通过对含蜡原油流变性的影响因素理论研究,开展了加剂条件优选及BEM-5P降凝剂室内评价实验,进一步揭示了降凝剂对华北原油作用机理,在此基础之上,提出了华北原油管输的可行性方案。

By using the regular-solution theory and the virial expansion for the Redlich-Kwong equation of state, an equation was proposed to relate the solubility values of the gases in the non-volatile solvent to temperature and pressure.

采用RK方程的维里展开式和正规溶液理论推算得到的气体溶解度与温度和压力的函数关系式,并对相同温度和压力下CO等气体在纯苯酚中的溶解度进行了三参数关联,得出了溶解度的计算模型。

The collision term is two bi-velocity non-dimensionalized reduced ngle tri-velocity model equation is transformed into a bi- h integrating weightedly the non-dimensionalized model equation about the third component of molecule velocity.

采用BGK模型和Shakov模型近似碰撞项,进而引入两个二速度无量纲简化分布函数,通过关于分子速度第三分量取矩积分,将三速度单一模型方程变换为二速度微分方程组。

In this paper, a moving-boundary problem occurring under the acidifying was discussed, which was transformed into a coupled problem of an initial-boundary value problem of nonlinear parabolic equation and an initial value problem of differential equation.

建立了油气层酸化过程中的动边界模型,经Landau变换后,将所求问题转化为定边界上的非线性抛物型方程初边值问题和常微方程的初值问题的耦合问题,并给出了耦合问题的全离散格式。

Curvature is the result of geometric structure in image; a new third order partial differential equation is proposed which transports curvature information along isophotes. The third order POE is morphologically invariant. Helmholtz vorticity equation which annihilates vorticity and third order POE which forward transports curvature information are coupled to be a new model.

曲率是图像几何特征作用的结果,本文提出沿等照度线方向传输曲率信息的三阶形态学不变偏微分方程,并将抑制涡量的无粘亥姆霍兹方程和正向传输曲率信息的三阶偏微分方程耦合。

It is shown that the chlorinating process for fluorine-fixed calcine agreed well with the regional reaction rate model presented by Bagdasarym. The process consisted of two tandem steps, Erofeev Equation ln[ln(1a)]=lnk+nlnt was used to deal with the equation of reaction rate,the function between rate constant and temperature was k=2.7?07e125900/RT. The a...

结果表明:固氟焙砂的氯化反应动力学过程是区域反应速率模型,氯化反应过程经过了2个串联反应步骤,用Erofeev方程ln[ln(1a)]=lnk+nlnt处理反应速率,反应速率常数与温度T的函数关系式为k=2.7107eEa/RT,表观活化能Ea为125.9 kJ/mol,过程限制环节主要是界面化学反应控制。

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What are your goals and strategies for growth?

你的成长目标和策略是什么?

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3:1 你要写信给撒狄教会的使者,说,那有神的七灵和七星的,说,我知道你的行为,按名你是活的,其实是死的。

"It is a testament to making sure unemployment compensation is available, making sure we are looking out for people who have lost their jobs," she said.

"这是个实证,证明我们必须确保人们都可以得到失业补偿,确保那些失去工作的人们得到照顾。"