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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。

The first, economic environment before economic upswing is different; the second, initial impetus of economic pullulation is different; thethird, conduction mechanism of economic pullulation is different; the fourth, the action of bank on economic grow this different; the fifth, pushing mechanism of fixed assets investment in creasing is also different.

一是经济高涨前的经济环境不同；二是经济成长的初始推动力不同；三是经济成长的传导机制不同；四是银行在经济增长中所起的作用不同；五是固定资产投资增长的推动机制不同。

It is composed of complicated mechanism, mechanism of push bottles ahead is importance.

其组成结构比较复杂，进瓶装置是一个重要的组成部分。

During the four years study on the project, we develop a dynamical forecast model that describing the subtropical ridge surface. A new theory on the role of the land-sea thermal difference on the formation of the Subtropical High is advanced. It is concluded that in the summer subtropics over each continent and its adjacent ocean LO, SE, CO, and a double-dominant heating from west to east compose a LOSECOD heating quadruplet. The influence of the Eurasia continent on SH varies according to the seasonal variation. From the ideal numerical simulation it is shown the important role of the Eaiuan continent and the huge topography on the mechanism of formation and mantanence of the SH during the summer. It is verified by the numerical simulation that the extension of the subtropical continent into the tropics greatly enhances the " East Asian monsoon". Through the Rossby energy dissipation theory it is verified that the deep latent convective heating induces the onset of the South China Sea monsoon over the Bay of Bengal. The relationship and mechanism between the precipitaiton over the East Asia and the Subtropicla high is illustrated by the data. It is also found the close phase lock between the east-west shift of the SH and the disturbence of the east wind belt over the tropical troposphere. The interaction between the structure and activity feature of the SH and the Meiyu over the Yangtze-Huaihe river valley is revealed from the data. The numerical simulation verified the impact of the different SH pattern on the path of the typhoon.

本项目的研究发展了描述副热带高压脊面变化的动力模型，提出了夏季副热带地区四叶型非绝热加热分布型及相应环流拼图的创新理论；明确了大陆尺度的海陆热力差异在副热带高压形成中的作用；指出欧亚地形对副热带高压和气候的影响随季节变化而变化，通过数值试验证明春季青藏高原的感热加热对亚洲夏季风的爆发地点起了"锚定"的作用，进一步证实了副热带高压断裂和亚洲夏季风的最早爆发地点发生在孟加拉湾东岸；利用Rossby波能量频散理论证明了孟加拉湾深对流潜热释放诱导南海季风爆发的机制；揭示了东亚季风降水的季节内变化与西太副高的关系及机理；揭示了西太副高与东西风带中扰动之间的相互作用过程，指出西太副高的东西活动与热带对流层上空东风带扰动和中纬度西风带扰动的移动和锁相密切相关；研究了夏季淮河流域梅雨期间副高结构和活动特征及其与江淮暴雨的相互作用；验证了不同副热带高压形态对台风路径的不同影响；通过数值试验证明了欧亚大陆和青藏高原等大地形对副热带高压形成和维持的重要作用。

At present , The JiaWei designs and produces all kinds of cassette mechanism of quartz clock,including cassette mechanism of alarm clock,stopwatch and pendulum clock.

当前，加威所设计生产的石英钟机芯种类齐全，有闹钟机芯、扫秒机芯和摆钟机芯，以优良的品质，赢得了国内外市场的广泛认可。

At present , The JiaWei designs and produces all kinds of cassette mechanism of quartz clock,including cassette mechanism of alarm clock,stopwatch and pendulum clock. The products win the authorization from both markets in and abroad.

当前，加威所设计生产的石英钟机芯种类齐全，有闹钟机芯、扫秒机芯和摆钟机芯，以优良的品质，赢得了国内外市场的广泛认可。

Second, the distributions of the two series are both non-normal, and one series from auction mechanism has peaker mountaintop and fatter tail than the other series from continuous order-driven mechanism. Third, the auction will bring more noise in terms of stock yield, and demonstrate more deviation in the random walk in the market efficiency model.

第二，通过两种交易制度得到的两个股票收益序列的分布都是偏正态的，并且从集合竞价得到的序列比从连续竞价得到的序列尖峰厚尾；第三，集合竞价产生的股票收益比连续竞价产生的股票收益有更大的噪音，对市场有效假说的随机游走形式更大的偏离。

Using ratch cam intermittence shut-off mechanism,keeped parts on a carrier,and shut off after punching a certain length,through the concrete example,the structure principle,working process and design points of the ratch cam intermittence shut-off mechanism were introduced.

应用棘轮凸轮间歇切断机构，将制件留在一条载体上，构成一定长度后再切断成条状，通过具体实例，从棘轮凸轮间歇切断机构结构原理、动作过程、设计要点等方面作了介绍。

In ratiocinative mechanism, neural network adopt right directional reasoning method. And the ratiocinative mechanism of expert system contains two conditions, the validation to the diagnosing result of neural network and the alone ratiocination.

在推理机制中，神经网络采用正向推理的方法，专家系统的推理机制则又可分为对神经网络诊断结果的验证和独自重新推理两种情况。

Referring to the construct of the common experts system, the frame and function of our system was determined to extend the OPS83 ratiocinative method with converse ratiocinative method, and the ratiocinative mechanism based on target-driver controlling was realized. In accordance with the complexity, uncertainty and confusion of chip forming and chip-breaking process, We suppose imprecise ratiocinative mechanism on the basis of confusion mathematics theory, and found prediction system of the chip forming and chipbreaking for the first time.

研究确定了切屑形成与折断过程预报系统的结构框架，参照一般的专家系统构成原理，确定了本系统结构与功能；扩充了OPS83的推理方式，增加了逆向推理功能，实现了基于目标驱动控制的推理机制；针对切削过程中切屑形成与折断过程的复杂性、不确定性和模糊性，运用模糊数学理论，设计了不精确推理机制；首次建立了切屑形成与折断过程预报系统。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。