有限模型

A rate-distortion model is presented in order to make use of the down channel of deep space effectively and analyzed the error of image loss compression exactly.It is fit for CCSDS image compression standards based on wavelet transform.

为了能更好地利用有限地深空通信下行信道资源，更准确地分析图像有损压缩的失真大小，提出了一种适合于CCS-DS基于小波变换图像压缩标准的速率-失真模型。

A rate-distortion model is presented in order to make use of the down channel of deep space effectively and analyzed the error of image loss compression exactly.It is fit for CCSDS image compression standards based on wavelet transform.

中文摘要：为了能更好地利用有限地深空通信下行信道资源，更准确地分析图像有损压缩的失真大小，提出了一种适合于CCS-DS基于小波变换图像压缩标准的速率-失真模型。

However,most of the current numerical implementation are based on a hybrid finite - element/finite - difference/control - volume solution with the middle - plane model. This kind of model leads to great inconvenience in applications..

但目前的流动模拟软件都是采用基于&中性层&模型的有限元/有限差分/控制体积法来分析z1，所谓中性层是假想的位于模具型腔和型芯中间的层面，其模拟过程如图1所示。

A finite element model of the rotor system with a disk located at one-third span of the shaft was presented to investigate the dynamic characteristics of a single-disk rotor system with the ends mounted on viscoelastic elastomeric dampers.

为了研究两端黏弹性橡胶阻尼器支承单盘转子系统的动力学特性，建立了轮盘位于1/3轴跨处的转子系统有限单元模型。

Based on the finite volume method, a computer model for a TBD234V12 marine diesel engine with sequential turbocharging system is established.

基于有限容积法，建立了TBD234V12船用柴油机采用2台增压器相继增压的计算模型。

In this paper, based on the finite element method, a three-dimensional finite element model was selected to simulate performance of the self-tapping screw connections and the failure modes of the panel, considering material nonlinearity and changing-status nonlinearity.

本文运用有限单元法，建立三维实体有限元模型，考虑了材料非线性与接触非线性，对钢板－自攻螺钉连接的受力情况和破坏模式进行了细致研究。

The model is solved using finite difference method. The profiles of water saturation, pore pressure and gas pressure were plotted.

采用有限差分法对所建模型进行了求解，并绘制了含水饱和度、孔隙水压力和孔隙气压力的时空分布曲线。

First, the control equations of two circulations are cstablished, and then it is tried to find numerical solution of the model under different circumstances.

首先建立系统中两个循环体的控制方程，然后在有限条件下对模型求解，并对求解的结果进行实际意义的分析。

Finite element method is employed to analyze the vibration responses of ship to excitations in consideration of fluid-structure interaction .

首先应用五种类型的有限单元建立了接近于真实船舶结构的有限元模型，并应用有限元法完成了流—固耦合状态下，船舶结构振动位移响应数值计算。

In order to reduce transportation congestion and make full use of the existing road resources, this thesis establishes a variable-lane road network design bilevel model under tide-like traffic flows, in which transportation management section at the upper level reallocates the lanes of two-way roads to minimize the total system cost, while transportation users at the lower level follow stochastic user equilibrium assignment principle to select travel routes.

4为了合理利用有限的道路资源和缓解交通拥挤，建立了潮汐式交通流条件下可变车道的双向道路网络设计双层规划模型，其中处于上层的交管部门通过确定最优的双向道路的车道分配方案，以达到整个交通网络系统总阻抗最小的目的，而处于下层的交通用户遵循随机用户平衡交通分配准则选择出行路径。

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％。