查询词典 mathematical analysis

Keywords: FEA; Strength analysis of drill chuck; Finite element modeling; Contact analysis; Parametric design; APDL

关健词：有限元；钻夹头强度分析；有限元建模；接触分析；参数化设计；APDL

Based on the idea of the structure parametric design method, the parametric finite element model of drill chuck with complicated spiral surface character was established.'The related key technologies of drill chuck's strength analysis were discussed and solved, such as the contact analysis parameters selection, the boundary conditions and the load processing, ANSYS command一string building and so on.

本文采用结构参数化设计方法建立了含有复杂螺旋曲面特征的钻夹头参数化有限元模型；探讨和解决了钻夹头夹紧强度分析中夹爪与螺母接触分析参数的选择、约束边界和载荷处理、分析流程文件创建等关键技术问题。

By the dynamic strain response test and its wavelet analysis of the driving axle housing models with and without prefabricated cracks respectively, the feasibility of the crack detection method which is based on the wavelet multiresolution analysis and the modern spectrum estimation is demonstrated.

通过对微型汽车驱动桥壳有、无预制裂纹模型试样在瞬态激励下的动态应变响应试验和小波分析，论证了采用小波多分辨分析和现代谱估计技术，通过对小波分解所得到的各尺度下细节信号的频谱分析，检测结构裂纹故障的可行性。

Brief the; of commonly used method that narrated research to sort solid coupling problem discussed iterative method of dry mode law, across and LS-DYNA finite yuan of software analysis law, the theoretical calculation that is problem of coupling drifting solid offerred new method and train of thought, the analysis of problem of convection solid coupling has fair referenced value.

简要叙述了探究流固耦合新问题的常用方法；讨论了干模态法、交叉迭代法以及LS-DYNA有限元软件分析法，为流固耦合新问题的理论计算提供了新的方法和思路，对流固耦合新问题的分析有一定的参考价值。

On this basis,the thesis proceeds from new problem in current economic development and developing reality of the basic social security of urban and rural areas in China.According to the reality of national conditions and the experience of basic social security of the western developed countries and Chinese basic social security and the next development trend of construction of China,the thesis used qualitative analysis and quantitative analysis means to study dualization social security system.

本文基于对有关社会保障理论的介绍、评析与我国社会保障实践相结合的基础之上，采用理论联系实际的方法，通过对我国城乡二元化社会保障实践的经验和教训的总结，运用社会主义市场经济理论和社会保障科学理论，结合我国目前农村经济运行中出现的新情况、新问题，提出改革和创新的新模式、新思路，寻求符合中国国情的统筹城乡二元化社会保障制度的新体制。

After the intro- duction and analysis for the measurement and test of CMMI,a software test process model is proposed based on CMMI.On the basis of the understanding,the analysis of effective metrics of software test process is performed.

通过CMMI与软件测试、度量的分析，提出了基于CMMI的软件测试过程模型，并以此为基础对软件测试过程度量元的有效选取进行了研究。

In this paper, a detail analysis of the circumferential through-crack in the cylindrical shells with different boundary restraints is performed by means of the elastic-plastic finite element method. The results obtained provide the application of some analysis methods of elastic-plastic fracture parameters such as Dugdale model with a necessary theoretical base.

本文针对柱壳周向壁穿裂纹，利用弹塑性有限元的数值解，在不同的约束条件下进行了较为详细的分析，获得了一些带有规律性的结果，为Dugdale模型等一些弹塑性断裂参数计算方法的应用提供了必要的理论基础。

DuPont financial analysis of the current system there is a clear financial analysis of the shortcomings.

现行杜邦财务分析体系进行财务分析存在着明显的缺点。

At the end, phase space analysis and wavelet analysis is studied by way of the dynamic analogy test.

最后，本文还对电力系统相空间分析和小波分析进行了动模实验研究，进一步将电力系统非线性问题研究引向实践，并获得了初步结果。

A review of the literature in Taiwan revealed a lack of recent systematic analysis on dysphasia. The purpose of this article was to discuss dysphasia within the concept analysis framework provided by Walker and Avant (2004). This article verified and confirmed the conceptual characteristics of dysphasia; identified antecedents and consequences; and elaborated on previous cases (including model, borderline, contradictory, and related cases).

虽然目前有不少的文献探讨吞咽障碍的评估与处置，但并无针对吞咽障碍作有系统的概念分析，故本文依Walker及Avent(2004)提出概念澄清与分析方法来进行吞咽障碍的概念分析，广泛性地查证此概念之定义及确认吞咽障碍的概念性特徵，并且列举典型、边缘与相反案例作说明，同时确认吞咽障碍发生的前因与后果并阐述相关实证资料。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。