形式模型

Research has been done on the coupling form between the two-row planetary gear train and the shift restriction based on the matrix, and then the method of establishing mathematics model has been presented to analyze the planetary gear transmission using MATLAB. The coupling-matrix, restriction-matrix and transmission matrix form the model. All coupling-matrices corresponding two kinds of the coupling form determine the planetary gear transmission model.

基于矩阵理论对双排行星齿轮变速机构的行星排之间联结、换挡约束进行研究，提出用联结矩阵、约束矩阵和传动矩阵构建数学模型并使用MATLAB进行传动分析的方法。2种方式的联结形式所对应的联结矩阵可以确定机构所有可能的结构型式，据此得到双排行星齿轮变速机构全部型式谱图。

The flow characteristic of gas-solid bubbling fluidized-bed was simulated based on two-fluid model by using Fluent.

在双流体模型的基础上利用计算流体力学软件对气固鼓泡流化床的流动特性进行了模拟，得到了鼓泡流化床的一种流动形式。

Based on these, an improving μ-synthesis is presented, with which the high-purity distillation is designed well. 2. The robust performance problem of MIMO plant is explained with the plant direction angle, which shows that the robust performance varies with different input uncertainties and the μ-synthesis should be applied correctly according to the uncertainty structure. 3. Condition number and bandwidth are the important items for robust performance design in MIMO system. The H〓 two-block problems can not deal with the robust performance design of MIMO system because of the condition number cancellation. A general μ-synthesis procedure for MIMO system with uncertainties is presented. 4. For the SISO system, the object function in robust performance is amplified by at most 〓 than that of H〓 two-block problems in value: So the robust performance of SISO system can be done with the H〓 two-block problems to avoid the complicated μ-synthesis procedure. 5. All the conclusions and methods presented in this paper are demonstrated by some typical design examples.

从而形成一种改进的μ综合方去，并对精馏塔病态对象进行了鲁棒性能设计，得到令人满意的结果；（2）利用对象的方向角解释了MIMO对象鲁棒性能设计出现问题的原因，并提出不同输入摄动形式下系统的鲁棒性能问题也并不相同，因此利用μ综合处理鲁棒性能设计时，应根据不同的摄动情况采用不同的结构进行设计：（3）条件数问题和带宽问题是MIMO系统鲁棒性能设计的两个主要问题，指出由于条件数对消的存在使得一般H〓两块问题无法处理MIMO系统的鲁棒性能设计，而μ综合方法则是处理MIMO系统鲁棒性能设计的有效方法，并给出了其处理MIMO系统鲁棒性能设计的一般性方法；（4）提出对于SISO系统H〓两块问题（S/T问题、S/KS问题）的设计指标函数与鲁棒性能设计的μ指标函数在数值上最大差〓倍，因此对于一般SISO系统的鲁棒性能设计可以简单地用一般的H〓的两块问题处理，而避免μ综合设计的复杂过程；（5）本文中提出的结论和算法都利用H〓/μ发展中的典型例子：Doyle-Stein问题，Safonov的战斗机模型，精馏塔对象等进行了设计验证。

A mathematic model of cord tension of any lamina is built up by calculating the stiffness model under inflation and static loading case of tire also.

该模型表明帘线受力特征与轮胎加载条件、轮胎断面的形状和尺寸、帘线的规格、帘线的铺设角和排列间距、带束层的结构形式、带束层的宽度等诸多因素的耦合作用密切关联。

It is difficult to think of a test or marker system that would not first be developed, in some form, in an animal model.

&很难想到会有一种不先以某种形式在一个动物模型中发展起来的检验或标记系统。&

It is difficult to think of a test or marker system that would not first be developed, in some form, in an animal model.

不先用一个动物模型并以某种形式来开发一个检验或标记系统是很难想象的。

The indoor model test using organic glass is carried out and the displacement, stress, earth pressure as well as its distribution type are measured to verify the theoretical values.

使用有机玻璃进行室内模型试验，实测了端墙的位移、路面板应力、端墙应力及土压力，验证了理论分析结果，获得了端墙背后土压力的分布形式。

Two test pieces with satin surface and rib surface were designed under conditions of different distribution of heat flow density and different air flux.

我们对两块冷板实验件(内表面光滑与内表面带肋)就热流均匀分布与热流局部分布、不同空气流量的情况下进行了试验研究，然后采用三维通用形式N-S控制方程，建立适于工程应用的冷板三维流固耦合传热过程的数理模型。

Based on the analysis of the data, the paper discusses the state of human capital of the rural migrating labor forces.

在对数据进行分析的基础上，讨论了中国农村外出劳动力的人力资本状况，并使用计量经济学的相关模型和方法估计了农村外出劳动力不同形式人力资本对收益产生的影响。

The shape of star formation rate density versus the redshift in the closed box is quite similar to the Madau plot drawn from the UV luminosity in the observation of high redshift.

我们在星系化学演化的研究中发现：变化的IMF形式对星系化学演化结果有明显的影响；星系化学演化总趋势是随时间演化气体含量逐渐减少，金属含量逐渐增加；在我们所取的简单星系模型内部恒星生成率密度随红移的演化关系能够在一定程度上体现高红移观测中所得到的Madau图的特性。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。