结构方程

A mathematical model was built for the selfdeveloped hydropneumatic spring configuration with a single air chamber by the equation mentioned above and the real gas state equation.

根据自主研发的油气弹簧的结构形式，通过上述推导公式以及实际气体状态方程建立了单气室油气弹簧的数学模型。

Example problems will show that the approximation of equation (2.50) facilitates the dynamic analysis of offshore structures with both extensible and inextensible supporting cables.

例题将表明逼近方程( 2.50 )，有利于动态分析离岸结构与扩展内不可及配套电缆。

The coupling system including the vibration of vehicles and bridge structure is set up based on the vehicle-bridge coupling element due to pavement's stochastic irregulation, the motion equation is solved by numerical integration method.

通过基于桥面随机不平顺的车桥耦合单元建立包含车辆振动和结构振动的耦合系统，用数值积分法求解动力学方程。

The governing equation is formulated based on the zero-order beam theory, and the state space method is used to compute the magnetoelectric coefficient.

本文基于多铁性材料梁结构的轴向运动的一维简化理论，建立了非均匀杆在纯拉伸模式下的控制方程，并采用状态空间法对磁电耦合效应进行了分析。

The equation of states under high temperatures and high pressures, phase -transition and metalization for H_2 and its isotopes are one of the hot topics of scientific studies for a long time.

氢及其同位素的高温高压状态方程、相变与金属化等问题是长期以来科学研究的热点课题之一；氢、氦分别是结构最简单的双原子和单原子分子，在冲击加载条件下，氢，氦材料的热力学特性一直是从事凝聚态物理研究的理论和实验工作者非常关注的前沿研究课题之一。

First the problem of multirate sampled-data reconstruction is studied and data reconstruction method based on wavelet network is proposed.

首先，利用小波网络构造参数子模型，并采用LS方法直接估计第二代参数；然后利用遗传算法和AIC确定参数子模型的结构，以获得最终用于表示LTV系统的二次回归方程，实现时变系统的多尺度经济建模。

Further application of the partially perturbative density functional theory to MX2-NX-H2O solution indicates that the present theory is better than the Poisson-Boltzmann equation and can be used to predict the structures and ion-partitioning of high-valent ions in charged nanopores.

对混合电解质溶液MX2-NX-H2O的结果同样表明本文的部分微扰的密度泛函理论要好于传统的Poisson-Boltzmann方程，且能够预测高价离子在带电纳米孔内的结构与分配。

Neural networks based on local sequence and amino acid component with the best structures and linear equation are constructed. The results of testing to the networks indicate that the forming of cis-proline has distinct relationships with local sequence and amino acid component. A new method for peptidyl prolyl cis/trans conformation prediction based on the theory of support vector machines was introduced. The SVM represents a new approach to supervised pattern classification and has been successfully applied to a wide range of pattern recognition problems.

通过运用神经网络与线性拟合的方法，揭示了脯氨酸局部序列、肽链氨基酸组分对于顺式脯氨酸形成与否的影响，构造了基于局部序列和基于氨基酸组分的最优结构的神经网络，以及线性拟合方程，同时对顺式脯氨酸进行了筛选，结果表明，利用神经网络的方法可以提高顺式脯氨酸筛选时的信噪比，脯氨酸采取顺式还是反式构象与其局部的序列以及整条肽链的氨基酸组分均有较强的关联。

Since the presence of a out coupling hole alters the transverse structure of the intra cavity light in a FEL oscillator ,the finite element method is used to the optical field equations and a good proximation is made for the out coupling process in the mirror,and then some numerical results are given.

针对孔耦合波导自由电子激光振荡器腔内光场横向特性，应用有限元法于慢变光场方程，并对输出腔镜上孔耦合过程加以较准确的描述，而后通过对数值结果的分析比较，说明这一模拟方法较好地描述了孔耦合引起的腔内光场横向结构的变化发展特性，改善了模拟结果。

For 9 pyrazole compounds,their geometry and electronic structures were analyzed by means of natural bond orbital theory;their reactivity was analyzed by electrostatic potential distributions,heats of formation and Bader density were also calculated.

在最稳定几何构型基础上，基于自然键轨道理论，分析了稳定结构的成键情况和吡唑环上的共轭性；用静电势图分析了吡唑化合物的反应性；理论估算了9种化合物的标准气态生成热和Bader密度；最后采用VLW方程计算了这些化合物的爆速、爆压。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。