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The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.

在弯曲关节模型推导的基础上,建立扭转关节的静态模型,并分析了扭转关节内腔压力,初始转角,橡胶管平均半径,橡胶管壁厚等参数对关节转角的影响,得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系,扭转关节的转角随初始角度和橡胶管平均半径的增大而增大,扭转关节的转角随橡胶管壁厚的增大而减小的结论;建立了扭转关节的动力学方程,仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短,在实际系统设计和控制过程中可以忽略不计;分析讨论橡胶管壁厚,平均半径,初始角度,气体节流口面积,转动惯量,粘性阻尼系数等因素对扭转关节动态特性的影响,得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显,壁厚较小时,关节可以得到较大的转角,并且转角的响应曲线没有超调,但上升时间长,壁厚较大时,关节转角变小,响应加快,但是有超调和轻微振荡现象,橡胶管平均半径越大,得到的关节转角越大,但是转角响应的超调量也随之增大,FPA的初始角度越大,关节的转角越大,并且超调量减小,振荡减弱,但是上升时间增大,管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大,但对关节转角的动态响应几乎没有影响,转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。

The results showed as follow:①Chinese astringent persimmon were climacteric respiration fruit, the respiration climacteric stage occurred at speediness softening stage. Ethylene climacteric stage and respiration climacteric stage were almost occurred at one time.②The activities of EXP, PG, PE, CX all had increased, and EXP increased early with PG, PE, CX in turn in persimmon fruit during ripening and softening.③Concomitancy to fruit softening, ultrastructural changes in the mesocarp tissue were occurred at speediness softening stage, showed as disaggregation of middle layer of cell wall, appearance of fibre-like structures, disorganization of chloroplast and distortion of some mitochondria.

研究结果显示:①中国涩柿属呼吸跃变型果实,在其快速软化期出现呼吸跃变;乙烯跃变与呼吸跃变几乎同期出现;②在成熟软化过程中,EXP、PG、PE、CX的活性均有上升,EXP活性上升最早,随后依次是PG和PE、CX;PG活性上升幅度最大;③伴随果实软化,果肉组织超微结构在快速软化期中胶层解体、丝状体出现,叶绿体解体、部分线粒体变形;④1-MCP可延缓柿果实硬度下降,常温下延长保硬期5-7天。

Chapter 1 reviews recent investigation in Bose-Einstein condensation, and analyzes critical point and condition of phase transition. Chapter 2 introduces the experiment of Mott insulator and superfluid phase transition in dilute atomic gases, theoretic mode and some studying. In chapter 3, we study the influence of dipole-dipole interaction of two component BEC in optical lattice, by Green function technique and mean-field approach. The results show that long range interaction and dipole-dipole interaction can be strongly influence the phase transition of two component.

本文内容分为四章,第一章对BEC近几年的研究回顾,分析了理想情况下凝聚的临界行为和凝聚条件;第二章我们介绍了光格子中绝缘-超流相变和理论模型及其描述;第三章我们利用格林函数和平均场近似的方法,对偶极-偶极相互作用在光格子中两分量BEC原子的超流-绝缘相变的作用进行了分析,结果表明偶极-偶极相互作用和长程相互作用对绝缘-超流相变有很大的影响。

In this thesis, I summarize and implement the up-to-date language models, such as N-Gram Language Model, Interpolation N-gram Language Model, Context-Free Grammar and Probabilistic Context-Free Grammar, and establish the run-length language model Character-level and word-level run-length language model are established on the base of the concept of limit entropy and discrete stable information source and by using maximum likelihood between character strings.

在充分研究和比较了中文和西文特点的基础上,提出了变长汉语语言模型。应用极限熵、离散平稳信源和字符串之间的最大似然度等概念和方法,建立了字一级的变长语言模型和词一级的变长语言模型。实验的结果显示这种语言模型不仅比Bigram具有更低的复杂度,而且包含了更长距离内的信息,运行时间也大大小于N-Gram。

The numercial simulation has been carried out, and the experimental results show that this method has been improved significantly comparing with the traditional one in nonlinear optics. Secondly, a second order system of semilinear elliptic equations, which comes from a mathematics model of the electric potential distribution of a media surrounded with the protein, is transformed into a variational problem, the existence of solution of it is proved by using variational principle and Trudinger—Moser inequality, and the relation between the solutions of variational problem and the solutions of its dual problem is obtained.

首先,讨论了非线性光学中的二次谐波产生的耦合方程组,利用变分法证明了耦合方程组非平凡解的存在性,然后进行了数值模拟,实验结果表明文中方法比经典的非线性光学中的方法有较大的改进,这对优化光倍频器件的设计将有所帮助;其次,将一类二阶半线性椭圆型方程组转化为一个变分问题,然后利用变分法和

By the means of theory, simulation and experiment, the second part of this paper is then analyzed which is on the equivalent output resistance and inductance of the selected inverter and the effect to the output voltage"s amplitude and phase caused by the different values of the inverter"s component. It is concluded that by selecting certain precision level components, the difference of the output voltage amplitude is much greater than that of the output voltage phase.

其次通过理论、仿真和实验分析了本文所采用的电压电流双闭环瞬时控制方式逆变器的等效输出阻抗和两台逆变器器件差异对输出电压的幅值差和相位差的影响,从而得出选用一定精度的器件,两台逆变器输出电压的幅值差比相位差大得多的结论。

Anita Mui smiles cheerfully. Her eyes are full of feminineness of a mature lady. In past days, I created a hot image, because I was young. When you are young, everything can be exaggerated.

"其实我现在还是在变啊,不过是小变,不是大变,"梅艳芳笑笑,眼神中掠过的一丝妩媚仿佛让人呼吸到她浑身散发的成熟的女人香,以前形象火爆,那是因为比较年轻嘛,年轻当然可以做得比较夸张一点。

The main results were summarized as follows: 1 With the increase of cooling rate, full recrystallization during cooling became difficult to take place and the decrease in dislocation density became slow so that dislocation density in austenite remains higher before phase transformation occurred. 2 Compared with undeformed samples, the CCT diagram under deform conditions has a similar shape, but its position shifts leftwards.

计算结果表明:1随着冷却速率增大,低碳钢热变形后的冷却过程中再结晶变得越来越困难,位错密度的下降变慢,导致在相变前奥氏体中保留着较大的变形存储能;2奥氏体在经历热变形后的CCT曲线与未变形条件相比,明显向左上方偏移。

Beijing-a super-large city, streets, buildings and plazas here have larger dimensions than a small city-Sichuan. In Beijing a giant city space is divided and wrapped by reinforcements, cement and glass curtain wall; apparently, their existences intend to accommodate more people to live and work in, however, they change ways of direct communication between human and human-all things in a regular order and become indirect and circuitous. E.g., two persons looking at each other on two sides of a street have to bypass a long way to cross over a rail fence in the middle.

身处北京这样的特大型城市,这里的街道、楼宇和广场在规模上有着远比四川小城更大的体量,它们用钢筋水泥和玻璃幕墙把诺大的城市空间分割和包裹,表面上看它们的存在是为了能够容纳更多的人生活和工作于其中,实际上却更加改变了人与人之间相互交流和沟通的直接方式--一切都变得有条不紊,都变得间接和迂回,连马路对面想望的人,都要绕行很远,才能跨越中间的护拦隔离带相聚。

The results indicate that weight factor had significantly effect on gait speed, steps per minute, gait cycle time, the ratio of stance time and swing time, maximal flexion angle of knee joint and the range of motion of elbow joint. Shelf height had significantly effects on hip flexion and elbow ROM. Box size factor had significantly effect on stride length, gait cycle time, the ratio of stance time and swing time, knee joint elbow ROM. For the muscle activity levels with EMG, load weight and shelf height both affected the %MVC significantly. When the subjects carrying a load of 14kg, the muscle activity and the subjective body part discomfort rating are both higher than that of 7kg. The box size had effect on the body part discomfort rating of upper extremity and back. For the kinetic and kinematics analysis, the shelf height around elbow height was better than the other two height levels.

研究结果显示,对步态时间与空间参数而言,重量因子显著影响步速、步频、步态周期时间与站立期摆荡期比值,箱型因子显著影响步长、步态周期时间与站立期摆荡期比值;关节活动度而言,重量显著影响膝关节最大弯曲角度、肘关节屈伸角度范围,高度因子显著影响髋关节前后倾角度、肘关节活动各变项,箱型因子影响膝关节弯曲最大最小值以及肘关节活动各变项,对肌肉活动度而言,重量与高度因子皆显著影响MVC%值,14公斤重者肌肉活动度与主观不舒适程度皆较7公斤者高,箱型因子虽无明显影响肌肉活动度,但是在主观不舒适程度上却明显影响上肢与背部,终点放置高度应设在肘高附近为佳。

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。