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This paper addresses the features of e-preprint, differences between traditional preprint and e-preprint, and the role of e-preprint in scholarly communication.

本文将从电子预行本的特质谈起，并探讨传统与电子预行本在本质与传播机制中的差异，并为电子预行本在学术出版流程中寻找定位。

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

It is believed that it was either named after Benjamin Caunt, who was a prize-fighter weighing 108 kg and called Big Ben, or after a large Welshman called Sir Benjamin Hall.

有人认为它是因本杰明·刚特而得名。刚特体重108公斤，是一名职业拳击手，又叫"大本"。还有人认为该名来源于一个高大的、名为"本杰明·霍尔"威尔士人。

Add Proterozoic the "integrity-based, quality-oriented, service-oriented" as our business purpose.

长期以来，太原市加宙科技有限公司把"诚信为本，质量为本，服务为本"作为我们企业的经营宗旨。

In the chapter one, the paper makes a summary to the evolvement of authors and readers in Chinese ancient and contemporary literature, concludes the three main characters and traits about the evolvement, makes a basal definition to the readers of puissance and authority, and analyses the identity of the readers, their changes in history and characteristic of their thoughts.

在绪论中，本论文对这篇论文的理论意义和实际意义，对所要解决的主要问题和研究途径与方法进行了阐述，在目前所掌握的资料和信息的基础上，对与本论文有关的以前的学者所作的研究进行了一个大致的梳理，说明了本论文在这个研究专题上的原创性。第一章是权势权威型读者的形成和演变。

In this tutorial I will show you how to create flock of fish and how to control their random motion, before going to start this tutorial I assume that you should have some thing in your scene any object it dose not matter, what object is it can be fish, bird, robot, car any thing you have but I will use fish in this tutorial, when you working with you should have any drawn in scene, like mine below.

在本教程中我将告诉你如何创建鱼类的羊群，如何控制自己的随机运动，即将开始前，本教程中，我假设你应该有一些东西在你的现场任何物件它剂量不要紧，什么对象是可以是鱼，鸟，机器人，汽车的任何一点你，但我会在本教程中使用，当你与，你应该有任何绘制场景像我下面，鱼。

The Party in breach shall have (30) days from receipt of a notice from the other Party specifying the breach to correct such breach if it is remediable.

如果一方实质上未履行其在本合同项下的任何义务，或一方在本合同项下的陈述或保证实质上是不真实的或不准确的，该方应被视为违反了本合同。

S Cooperative Defence Guidelines and its correlation bills is to set up legal foundation of making Japan returns into a military and political big power;Their bases are Japan's economic strength,its extremely conceited nationl mind,and the U.S's policy to the Far East;Their dangerous trends will be Japan's remilitarization,relaunching wars,and resuffering defeats.

《日美防卫合作新指针》及其相关法案的实质是日本为重新走向军事大国、政治大国创立法律依据；其基础是日本的经济势力、军国主义的崛起、唯我独尊的国民心理、美国的远东政策；其危险趋势是日本再次军国主义化、日本再战、日本再败。

Digest:the crux of the new japan-u.s cooperative defence guidelines and its correlation bills is to set up legal foundation of making japan returns into a military and political big power;their bases are japan's economic strength,its extremely conceited nationl mind,and the u.s's policy to the far east;their dangerous trends will be japan's remilitarization,relaunching wars,and resuffering defeats.

《日美防卫合作新指针》及其相关法案的实质是日本为重新走向军事大国、政治大国创立法律依据；其基础是日本的经济势力、军国主义的崛起、唯我独尊的国民心理、美国的远东政策；其危险趋势是日本再次军国主义化、日本再战、日本再败。

Digest:the crux of the new japan-u.s cooperative defence guidelines and its correlation bills is to set up legal foundation of making japan returns into a military and political big power;their bases are japan's economic strength,its extremely conceited nationl mind,and the u.s s policy to the far east;their dangerous trends will be japan s remilitarization,relaunching wars,and resuffering defeats.

《日美防卫合作新指针》及其相关法案的实质是日本为重新走向军事大国、政治大国创立法律依据；其基础是日本的经济势力、军国主义的崛起、唯我独尊的国民心理、美国的远东政策；其危险趋势是日本再次军国主义化、日本再战、日本再败。关键词：《日美防卫合作新指针》；日本；军国主义；战争；失败

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐