查询词典 equation of variation

Due to this equation,he gets the variation rules of the walking beam's swing angle and the calculation formula of the distance,velocity and accelaration in the hangingpoint movement.

以CYJ10－3－37HB型抽油机为例，计算了其悬点运动参数，并给出了与简化为简谐运动和曲柄滑块机构运动的对比曲线；分析表明，悬点的上、下死点位置不是常规认为的180°和360°（或0°）曲柄转角，因而按常规计算时悬点位移将出现负值。

By using the continuity equation and weak hydrody-namic interaction theory in the relaxation time approximation, the spatial variation of the radar scattering cross-sec-tion has been proved as proportional to the gradient of current velocity.

在浅海海流速度垂直分布廓线为均匀的假定下，由流体连续性方程和弛豫时间近似下流体力学弱相互作用的理论，已证明雷达散射截面的空间变化正比于海流方向上海流速度变化的梯度。

For explain this equation, Jos's approach discard the equibalance force of density variation, only consider equibalance force from saturation of solute, it is equal the movement of fluid in the weightless condition, this is not realistic.

从方程的角度上来说， Jos 的算法里丢弃了水趋往均势的运动量，只包含了水中溶解物趋往均势的运动量，相当于无重力环境下水在平面上的运动，或者是溶解物在液面上运动，这是不符合实际的。

Based on the theory of two-phase fluids dynamics, the general governing equation is established, which is applied to the fields of seepage, consolidation and deposit. For the first time, the mechanics properties of the soil affected by seepage are studied by the means of experiment. The problems of the modified indexes of mechanics and constitutive relation are solved due to the formulations obtained of mechanics parameter under seepage condition. Applied fuzzy theory and modern project design method, the fuzzy probability model for stability analysis is stetted up; Considered variation of mechanics parameter and curtain effect, the deformation patterns of deep execution are systematically analyzed.

基于两相流理论，推导了适用于渗流、固结和沉积的统一形式的控制方程；试验研究了渗流作用下土的力学性质的变化规律，经综合分析得到力学指标的定量表达式，为工程设计和数值计算中力学参数的确定提供了参考；基于模糊理论和现代工程设计方法，建立了基坑失稳的模糊概率模型，为基坑稳定性预测提供了新的方法；对基坑变形规律作了系统分析，考虑了土性变化和帷幕防渗效果对支护结构变形的影响，得到了较满意的结果。

The mechanism of the energy separation of a vortex tube is caused by the unsteady variation of pressure, viscosity stress and heat transfer through the energy equation.

本文在涡流管机理研究方面，从能量基本方程出发，推导出引起能量分离的因素是压力的不定常波动、粘性应力和热量传递。

Moreover, it indicates that the error is reduced with the increase of the exponent number of the Asymptotic Boundary Conditions. In the third chapter, based on the Laplace equation, the limitation of the variation methods are deduced from the process proving the operator to be self-adjoint and positive definite.

针对二阶渐近边界条件中含有微分项的情况，第三章研究了基于变分的有限元方法对边界条件的限制，提出对所适用的边界条件的要求，从而说明针对二阶渐近边界条件问题可以采用迦辽金有限元方法。

According to Snell law and Zoeppritz equation,the paper studies the rule of energy's distribution of elastic wave on the interface,obtain the rule of received energy variation with offset or angle,and also study the relation of the exploding freq...

根据Snell定理和Zoeppritz方程，通过水平层模型的正演模拟，研究了地震波在地层分界面上的能量与方位角关系，发现了地震反射波的能量在超临界角突然增强的变化规律。

The theories proposed by Wilson (1994) were adopted to describe the fundamental behaviors of temperature and variation of suction of soil. The Darcy's law and Pick's law described the flows and evaporation of water respectively. Some proposed assumptions including the characteristic curve of volumetric water content and hydraulic conductivity were only related to the suction of unsaturated soil. The coefficient of latent heat for water was a linear function of temperature; and the heat conductivity was calculated according to the equation proposed by De Vries.

对于土体的温度和吸力变化特征，采用Wilson提出的理论加以描述，在此理论中，分别利用Darcy和Fick定律描述水和蒸汽的流动规律，土水特征曲线和水力传导系数假定仅仅相关于非饱和土吸力，水的潜热系数是温度的线性函数，温度传导系数采用De Vries建议方程加以计算。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。