数学模型

On the basis of these, the author analyze stress-strain model of rock and soil which is under the groundwater effect, the continuity equation of groundwater when the rock and soil is deformed, and the relation between permeability coefficient tensor of rock and soil and stress field, and brings up the mathematical model of stress-seepage coupling fields.

在此基础上，论文阐明了考虑地下水作用的岩土体本构模型、考虑岩土体变形的地下水流动连续方程和岩土体渗透系数张量与应力场的关系，提出了新的应力-渗流耦合场数学模型。

According to optical theory of distortion and utilizing BP neural network to approach nonlinear distortion, distortion correction mathematic model of whole field was set up through training the distortion measurement data which were measured by distortion detection device. This device has eleven equidistance points of laser goals and is designed based on the basis of distortion mechanism and radical character.

根据畸变光学原理，利用BP神经网络对非线性畸变进行良好的逼近，通过对由畸变测量装置获得的数据进行训练建立网络模型，从而建立整个视场畸变校正的数学模型。

Finally the whole dynamic physical and mathematical model including windlass subsystem, water tank subsystem, equilibrator and fluid are established. The influence caused by mechanical gap is discussed. The coupling effect between mechanical and electricity can be treated simply as an exciting load.

最后，建立了包括机械同步卷扬提升子系统、承船厢子系统、平衡重和水体在内的三峡升船机整体动态力学模型和数学模型，并给出了整体动态响应计算的流程框图及编制了相应的软件。

The reaction rate constant and adsorption equilibrium constant in the equation were determined by means of initial concentration method.

利用所推测的动力学方程建立了气相光催化反应器的数学模型，并得到了非稳态条件下模型的解析解和数值解。

Combining with the characteristics and the principle of analysis on existing bridges, the equipollent load, the mathematical model and the stochastic model for traffic load on existing bridge are studied.

本文结合既有桥梁车辆荷载的特点和分析原则，研究了既有桥梁车辆荷载的等代荷载、数学模型以及随机过程模型。

On the basis of the permanent magnet linear motor servo system nonlinear mathematical model, an error system dynamic equation is set up in order to reach accurate track of the motor speed and current.

在永磁直线伺服系统非线性数学模型的基础上，为实现对速度和电流的准确跟踪，建立了误差系统的动态模型。

The model and parameter accuracy are essential for excitation system modelling and parameter idenfication, and the criteria of testing the vadlity is given too.

模型和参数的精度是发电机励磁系统建模和参数辨识的关键，本文提出评判基于现场测试得出的数学模型和参数正确性的方法。

Some computation models are established, including models of factor set, comment set and single factor matrix.

该方法利用把表征非均质特征的9个参数作为因素建立起模糊数学模型，主要包括因素集合、结语集合、单因素矩阵等模型。

Standard Kalman filter strongly depends on the system mode and the statistical characteristic of noise,unfortunately,an accurate mathematical model of system is difficult to set up,so a new adaptive algorithm is presented based on federated felting and the adaptive estimation.

针对标准卡尔曼滤波器对系统的模型和噪声的统计特性依赖性强，而系统的准确数学模型难以建立的问题，结合联邦滤波和自适应估计理论，提出了一种基于联邦滤波的自适应算法。

With the numerical simulation, the distribution of temperature field in adsorbent bed was got by applying Fluent software and the relation between temperature field and each parameter was analyzed.

建立了吸附床几何模型和数学模型，通过Fluent软件数值模拟得到床层温度分布的变化情况，并深入分析床层参数变化对床层温度分布的影响。

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％。