查询词典 dynamics

This article provides a look at the unique dynamics of the semiconductor industry through the activities of one of its consortia, the Semiconductor Research Corporation.

本文提供了在半导体产业的独特动力通过其财团之一的活动来看，半导体研究公司。

METHODS The constant temperature acceleration test was used according to the principles of chemical dynamics.

方法采用恒温加速法对依达拉奉及其注射剂在不同温度不同时间的含量和有关物质进行考察，采用反相HPLC方法进行定量分析，通过数学拟合，确定反应动力学方程。

High dynamics of goods and services consumption was sustained by growth of the population real income and consumer credit.

基本建设投资增长的减缓看来受到了年初期通常出现的投资和业务活动减缓的影响。

Keywords: high speed train; modelling; stability; dynamics; continuation method.

中文关键词：高速列车；建模；稳定性；动力学；延续算法

Based on above characteristics of magazine, the design of magazine should follow the principle of continuity, randomicity and portability, which reflects on the respective dynamics of magazine when it is published,...

根据期刊的特性，期刊设计要以连续性、跳跃性、轻便性为主要原则，它们分别反映期刊在出版、阅读和携带时的动态，而处理期刊中的元素与整体、面积与空白、动态与静态、层次与空间、风格与气质是期刊设计的重要手段。

By using the method of an abstract continuous theorem of k-set contractive operator and some analysis technique. Sufficient conditions are derived for the existence of at least one strictly positive periodic solution of periodic two-species Lotka-Volterra competition dynamics systems with neutral delay and several deviating arguments.

利用k-集压缩算子抽象连续理论和某些分析技术，导出了此具有中立时滞和变差元的周期两种群Lotka-Volterra竞争动力系统至少存在一个严格正的周期解的充分条件。

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。

To tackle this problem within the continuum mechanics approach, one should establish new mechanics models, and further, use molecular dynamics simulation or other experimental to give reasonable verifications and supplements to the theory.

运用连续介质力学方法研究此类问题，首先需要建立新的力学模型；此外，还应当运用分子动力学（molecular dynamics，简称MD）模拟技术或者其他实验手段来对理论进行合理的检验及补充。

La Boston Dynamics ha creato il "Most Advanced Quadruped Robot on Earth", BigDog, per conto della Darpa.

波士顿动力学创造了"最先进的机器人四足动物在地球上"， BigDog ，代表DARPA。

This article introduces a new control method──dynamics self-optimizing contral.

本文介绍了一种新的控制方法─—动态自寻优控制。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。