复合试验

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。

This paper presents classification of car steel sheet in Cherry Car Co.and introduction and description of practical propery tests,applications of super deep draw steel IF- cold rolled high strength sheet,bake hardening sheet- cold rolled dual phase steel sheet,TRIP sheet,Sandwich steel sheet and pickled oil steel sheet.

介绍了奇瑞公司轿车用超深冲IF钢板、冷轧高强度钢板、烘烤硬化钢板、冷轧双相钢板、相变诱导塑性钢板、减振复合钢板和热轧酸洗钢板的实际性能试验及应用，分析了国内外部分钢种的实际成分和性能以及用高强度钢板制造车身的减振效果，并对薄钢板和典型表面件的抗凹刚度和抗凹深度进行了检测。

The organic blend acids preparation were supplemented into basal diet of AVIAA chicken by 5 g/kg、10 g/kg 、15 g/kg.The performance,pH in proventriculus and digestibility of nutrition elements were determined.

在饲料中添加不同浓度(5 g/kg、10 g/kg、15 g/kg)的有机复合酸化剂对艾维茵肉仔鸡进行饲养试验，测定了其营养成分的消化率，并在不同饲养时间检测腺胃pH。

This paper reporte dthe results of replacement of human Ciq with guinea pig Clq isolated by pseudoglobulin precipition method in solid phase enzyme-linked immuno-sobent assayfor the detection of human circulating immune complexes.

本文首次报道了以优球蛋白沉淀法提取的豚鼠C_1q替代人C_1q，作固相酶联免疫吸附试验检测人循环免疫复合物的结果。

In the third chapter, the contractilities and asymptotical stabilities of neutral delay integro-differential equations are concerned. The extended Runge-Kutta methods, with the compound quadrature formula and the Pouzet quadrature formula, are numerically stable under suitable conditions. The numerical experiments prove this result.

第三章，研究了中立型延迟积分微分方程，其理论解的收缩性和渐近稳定性，利用复合求积公式与Pouzet求积公式扩展Runge-Kutta方法，并获得了数值方法的稳定性条件，随后的数值试验结果进一步证明了方法是数值稳定的。

In the second chapter, generalizing the contractilities and asymptotical stabilities for multi-delay integro-differential equations. Under proper stepsize, we obtain the discretization schemes of Runge-Kutta methods with the compound quadrature formula and the Pouzet quadrature formula, and besides, derive the global and asymptotical stabilities. Moreover, the numerical experiments show that the presented methods are highly effective.

第二章，考虑了多延迟情形下的积分微分方程，推广理论解的收缩性与渐近稳定性结果，在适当的步长下，利用复合求积公式与Pouzet求积公式扩展Runge-Kutta方法，获得离散的计算格式，并且证明了方法是数值稳定的，此外，数值试验表明此计算方法在实际应用中是非常有效的。

In this paper application of mycorrhizal technology for revegetation of copper mine tailings was proposed and evaluated.

以采自矿区的铜尾矿砂为培养基质，通过一系列模拟生物学试验探讨了丛枝菌根真菌在植物适应尾矿复合逆境和尾矿植被重建中的潜在作用。

The experimental results show that this method is practical in making composite superficial particle rollers.

试验结果表明，利用该法制造粒子型表面复合轧辊的工艺是可行的。

Keywords peanut;aqueous enzymatic extraction;compound enzymatic hydrolysis;orthogonal experiment;safranine

花生； 水酶法；复合酶解；正交试验；番红

Moreover, D-sodium gluconate was mixed with other substances and used as corrosion inhibiting admixtures. The admixture of D-sodium gluconate and sodium tetraborate has the best inhibiting effect among these mixed inhibitors.

复配试验表明，D—葡萄糖酸钠与四硼酸钠组成的复合缓蚀剂缓蚀效果最好，而与甘氨酸和乙醇胺复配的缓蚀剂也表现出较好的缓蚀效果。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。