查询词典 modal

Third chapter illustrate the design scheme for justification development system, amalgamation steer the argumentum;And code design in the detailed design sum the database design of whole system;Recommended the detailed design information of sum of the shuttering cake structure of the aetioporphyrin system;Analyzed the library to manage the system's appliance demand, according to the database design theory proptosis of one-step and one-step earth joint system demand manual, local ER general view, overall situation ER general view, system relation modal, leaven the modal;Arrangement in parallel proptosis the valve key source of the said system code in the procedure the amalgamation commit the interpretation, justification.

第三章说明开发系统的设计方案，并进行论证；以及详细设计中的代码设计和整个系统的数据库设计；介绍了本系统的模块结构和详细的设计信息；分析了图书馆管理系统的应用需求，按照数据库设计理论一步一步地给出了系统需求说明书、局部ER图、全局ER图、系统关系模式，子模式；并列出了该系统的关键源程序中的代码并做解释、说明。

Through field test, the modal shape and modal frequency of the cantilever retaining wall system are tested and computed. Then based on the superposition method model the health diagnose method for the local damage and the two typical failure modes for slippage, capsizal are studied.

通过现场试验，对悬臂挡墙系统模态振型、频率进行了测试与计算，并基于集中质量参数法对墙体结构局部损伤及倾覆和滑移两种典型破坏模式下健康诊断方法进行了研究。

Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

From simulation, the 1st modal frequency and modal deformation could be achieved under different fixed ways.

然后结合模态实验的方法进行了不同边界条件下的动态测试分析。

From this experiment, frequency response function could be found, and modal parameter also could be known by curve fitting, then compared with the differences of mode shape and natural frequency by using those modal parameters, also compared with finite element analysis, the results could be applied to detect the structure of beams and prevent it from damage and corrode for the safety in the future.

将实验中三种驱动器搭配加速度计实验分析结果较佳的一组方法，来从事结构之非破坏检测，探讨当固定梁有缺陷产生时，其结构之自然频率与模态振型的变化，并比较其不同缺陷处之固定梁实验模态结果，将来可应用於梁结构物损坏或腐蚀时侦测其安全性之分析。

Beginning with raising the signal noise ratio of the global identification, the global identification method weighted with modal shapes is presented, which permutes and composes the elements of FRF in the form of the sum of modal shape squares and obtains global modal parameters with relatively high SNR.

本文在综合分析现代模态分析领域国内外现状的基础上，以学科的一些难点为研究对象，对系统模态参数识别、动态建模、动态修改领域存在的问题进行了广泛深入的研究，取得了一系列独创性的研究成果。

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

Findings of the study indicate: 1 Chinese EFL learners overuse those modal verbs that appear earlier in textbooks, and underuse those modal verbs characterized by interpersonal functions as well as those often used for unreal conditions; 2 modal verbs in learner language tend to be preceded by personal pronouns and followed by main verbs which are aspectually unmarked and neutral in terms of voice.

研究发现：1我国非英语专业学习者书面语中过多使用教材中较早涉及的部分情态动词，而较少使用可以表达委婉语气和虚拟条件的情态动词；2学习者书面语中的情态序列呈现两方面的特点，即在情态动词之前过多使用人称代词作为情态动词短语的主语，而在情态动词之后过多地使用体和语态都无标记的动词形式。

This paper focuses on the Multi-Modal Human-Computer Interaction technique, discusses some main topics in this field, including the modal description, system framework, integrate algorithm and so on; also, we have developed a practical MM-HCI system MM-TSBH(Multi-Modal TSBH), which will be introduced later, and, this paper also refers to some problems may be encounterd during developing and the resolvents of these problems.

通过对多通道系统语义的通用描述模型的研究，面向开发人员提供可重用多通道整合模板的支持，这本身就是应用软件系统所追求的目标之一，在多通道技术中实现这个思想有着更大的意义，本文给出了一个具体的实现方法。

With the fluid-solid coupling of train oil tank clue to train speed increase, the fluid-solid coupling modal analysis of G70B oil tank is calculated by NSYS. The finite element model of fluid-solid coupling system is set up. The fluid-solid coupling modal analysis of G70B oil tank is done for light oil tank train under different kinds of loads and its natural frequency and modal shapes are obtained.

针对列车油罐因列车提速导致液固耦合作用突出的问题，运用ANSYS软件对轻型油罐车G70B型罐体的液固辐合模态响应进行实例分析和计算；建立车载油罐的液固辐合系统有限元模型；对轻型油罐车G70B型罐体进行在不同贮液比时的液固福合模态分析，得出固有频率和模态振型图。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。