结构方程

As a differential pressure type flowmeter, the basic theory of the V-cone is Bernoulli's equation, which is similar to traditional DP flow sensors.

与传统差压式流量传感器相同，其基本原理建立在伯努利方程上；然而，其机械结构的设计则与传统差压式流量传感器大相径庭。

From the functional relationship between the flooding gas and liquid velocities derived from the two-film theory based on the Bernoulli equation,two parameters which are relative to the packing property were investigated.

根据从双膜理论出发由Bernou lli方程得到的液泛气速与液速之间的函数关系，考察了两个与填料有关的模型参数：一个是由填料比表面积a和床层空隙率ε所组成的填料因子a/3ε，另一个是本文定义的填料结构参数。

The bifurcation theory of the plane polynomial vector fields is one important research domain of the theory of ordinary differential equation.

平面多项式向量场的分岔理论是常微分方程定性理论的重要研究领域之一，主要研究依赖于参数的向量场的全局轨线拓扑结构随参数变化的规律。

Based on the characteristics of product provisions in local market, here developed 3 models using binomial tree, partial differential equation, term structure and Monte Carlo simulation.

在归纳国内产品关键条款的基础上，借助二叉树、偏微分方程、利率期限结构和Monte Carlo模拟算法，建立了三种可转债定价模型。

Horizontal gas well model considering well-bore structure parameters, turbulent flow under high-speed non-Darcy flow and start-up pressure gradient was established and solved. Binomial deliverability equation describing horizontal gas well was derived.

建立和求解了包含水平气井井身结构参数、近井区高速非达西渗流条件下气体紊流因素以及启动压力梯度效应的水平气井渗流模型，推导出了描述水平气井产能的二项式产能方程。

With increasing the degree of disorder, the transport properties can not be well described by the Boltzmann equation. In this thesis, we would experimentally investigate the effect of structure disorder on the electron-phonon interactions.

当无序程度增加，古典的波兹曼方程不再可以完全描述电子的传输，因此本文想要藉由实验探讨结构无序对电子-声子作用所造成的影响。

Analysis system of boundary integral equation based on the above mentioned accurate boundary condition was set up.

建立了基于准确的边界条件的边界积分方程分析体系，最终得到开口结构的应力分布。

However,authors still do not find the relevant references on convergence and symmetric problems of the semi-analytical solution.Based on the semi-analytical solution for Hamilton canonical equation theory,the formulations of the clamp and simply supported and symmetric boundary conditions on the Hamiltonian element are derived by the variational principle.Several numerical examples show that with increase of meshes,the convergence rate of the semi-analytical solution is faster than the convergent rate of traditional finite element method based on displacement.

①在厚度上没有任何位移和应力模式的假设，由于传递矩阵方法的引入，从理论上讲，不受板壳厚度或层合板壳层数的限制；②采用弹性力学的Hamilton正则方程半解析法，可以克服边界的局部化效应[8]；③由于在平面内或圆柱壳的曲面内采用了有限元法，所以一般的板壳问题不受结构侧面边界条件的限制，在复杂工程板壳问题上具有广泛的应用领域。

In this paper,we provide a handy method of solving certain Cauchy problem of the heat conduction equation.

计算较简捷，解的形式统一，结构简单，其方法适用于满足一定条件的有限维热传导方程的柯西问题。

Amukhin et al.,and convert it into an effective1D chain with particular distribution of equivalent coupling bonds.Then we use the single-electron Schrodinger equation to calculatewave functions of electrons in the chain by transfer matrix method,without using the assumption of Samukhin et al.On variable hoppingmechanism and critical percolation condition.From this calculationwe obtain the dc conductance directly from Landauer-Buttikarformula.

mukhin提出的多层次等级分形结构模型，将其简化为耦合键强度t具有特殊分布的等效一维链，舍弃前人假设的变程跳跃机制与临界渗流条件，从单电子薛定谔方程出发，用转移矩阵方法计算一维链的透射系数，再利用Landauer-Buttickar公式直接求出直流电导。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷