振动

The original linear model can be used to analyze the stability of Pogo vibration,but the results of linear model simulation are not so satisfied.

传统的线性管路模型可以用来进行Pogo振动的稳定性分析；但直接用于振动过程的仿真时，却与实际发生的振动现象差别较大。

Through the research into vibration of large liquid rockets, this paper explains the theoretical analysis and testing techniques of POGO vibration, and the means the designer should consider to prevent POGO vibration.

本文通过实际的大型液体火箭的POGO振动研究，阐明了POGO振动的基本的理论分析方法和试验技术，以及需采取的防POGO振动的措施。

Intelligent fault diagnosis system of vibratory road roller which consists of neural network and expert system is built in this paper by detailed analysis of structure and principle of vibratory road roller and comparison of main methods of building fault diagnosis system, this system can diagnose usual fault of vibratory road roller.

本文通过对振动压路机结构及原理的详细分析，对构建故障诊断系统主要方法的比较，建造了神经网络与专家系统相结合的振动压路机智能故障诊断系统，实现了对振动压路机常见故障的诊断。

With the development of the underpass system in our country, the vibration and noise problem which is aroused by the passing moving metro vehicle become more and more serious. The uneasy and damage brought by the traffic vibration has been considered to be one of the most unbearable public nuisance.

随着城市地下铁道交通系统的在我国各大城市的快速发展，由轨道交通带来的振动和噪声问题也越来越受到人们的关注，交通振动所引起的振动公害已被列为世界七大环境公害之一。

The results show that the identical resonance in 2.09THz is originated from the collective vibrational modes triggered by the torsional vibrations of the pyran ringsin hexoses; and the other characteristic resonances of the hexoses is originated from the intermolecular collective modes mediated by hydrogen bonding network of the crystalline structure.

研究结果表明，己糖在2.09THz处的共性吸收峰来源于己糖分子中吡喃环扭曲振动引发的集体振动模式；而己糖的其它特征吸收峰主要来源于晶体结构中由氢键网络支配的分子间集体振动模式。

Virtual prototyping technology was used to carry out the modal analysis and dynamic response analysis for vibration-impact rammer. The detailed analysis of the effects of the design parameters of vibration-impact rammer on the work characteristics of the machine was completed through the simulation test.

用虚拟样机技术对振动冲击夯进行了模态分析和动态响应特性分析，详细分析了振动冲击夯各设计参数对机器工作性能的影响，并以主要设计参数为设计变量对振动冲击夯进行了优化设计。

The first-step research work of electro-hydraulic servo oscillation system on Baosteel Continuous Casting Testing Platform is introduced.The results of hot-test show that the oscillation system runs reposefully and reliably.

0前言现代连铸技术的快速发展，对结晶器振动技术的自动化水平，以及振动与工艺的适应柔性都提出了更高的要求，促成了结晶器液压振动技术的产生。

It is demonstrated that the system can exhibit unstable periodic 3 3 motion bifurcated from periodic 1 1 motion on the resonance condition, and the transition from subharmonic impacts to chaos is disscussed.

分析并证实了碰撞振动系统在此共振条件下可由稳定的周期 1 1振动分叉为不稳定的周期 3 3振动，讨论了亚谐振动向混沌运动的演化过程

Inherent frequency characteristics of X2105C-1 diesel crankshaft are carried out by using ANSYS finite element method. The modal analysis includes retortion vibration, bending vibration and lognitudinal vibration.

对x2105C-l型柴油机曲轴在自由模态下的固有频率特性进行了有限元分析，所计算的模态包含了扭转振动、弯曲振动和纵向振动。

The research work consists of the analysis and determination of the dominant propagating waves in pipe, the revealment of nature of energy propagation and distribution in pipe-fluid system, the establishment of the energy flow measuring theory and methodology and the realization of energy flow measuring system.

研究内容包括：分析确定管道系统中的主要振动波，揭示流体管道系统中振动能量流的传递和分布规律，建立关于管壁振动能量流的测量理论与方法，实现能量流的测量技术。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷