地方法

The principle and measurement method of elliptical polarized light has been introduced simply in this article.

本文简要介绍了椭圆偏振光产生的原理及检测方法，并提出了一种直观、简易地测定椭圆形状的方法，有助于学生加强对椭圆偏振实验的理解。

In order to test the characteristics of the polarizer and the isolator, several measuring methods are adopted, whose relevant values are consistent with each other, and also with theoretical analysis.

为了全面而准确地测量偏振器和隔离器的特性，采用了几种不同的测试方法，不同方法测得的相应物理量结果一致，并与理论分析相吻合。

So I believe that if we address those issues constructively, we can find pragmatical ways to solve the remaining issues, and that solution can be found for the problem of market economy status.

我认为如果我们建设性地对待这些问题，我们能够找到切实可行的方法来解决余下的问题，对于市场经济地位问题，我们也可以找到解决方法。

The precision of integration can be evidently improved by using smooth function transition, adaptive step size change method, implicit integration and predictor corrector method. Increasing the order of the LMM may not improve the precision in this case.

采用光滑函数过渡、自适应变步长技术及隐式和预测校正等方法，可以有效地提高数值计算精度，而提高方法的阶次不能有效提高精度。

This paper presents a preimage computation approach used in unbounded model checking. The approach combines ATPG and SAT engines effectively and makes full use of their respective advantages.

提出一种无界模型检验的前像计算方法，该方法有效地结合ATPG和SAT引擎，充分利用引擎各自的优点。

So, primary proton event can be identified effectively from the hybrid experiment results by use of ANN (with less dependence on interactive model), and a ideal primary proton energy spectrum will be obtained.

因此，ANN方法对模型的依赖性较弱，预计利用这一方法可以有效地分辨出联合实验中的原初质子事例，从而得到一个理想的质子原初谱。

This study shows investigation and analysis of the professional stress among primary school teachers.

本文首先采用量的研究方法，对广州市天河区5所小学教师的职业压力强度作了问卷调查；然后，再采用质的研究方法，根据研究主旨的要求，从上述学校中选择部分教师进行访谈和观察，并结合个案研究，全面深入地展现了天河区小学教师职业压力的强度、来源及其个体表现等情况；最后，本文探讨了缓解天河区小学教师职业压力的一些具体管理策略。

This paper introduces systemical properties, applications status and choice principle of welding process used in long-distance transport pipeline.

系统地介绍了目前长输管道现场安装焊接常用的一些焊接方法的特点、应用情况及其选择原则，为选用经济合理、高效高质量的安装焊接方法提供了一定的技术支持。

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 algorithm needs no prior probability distributing knowledge of measurement data, and is easy to realize with simple programming and calculation.

虽然，这些方法都有效地提高了测量精度，但由于割裂了数据融合的时间性和空间性，所以这些方法都具有一定的局限性。

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。