振动

Coupling between combustion oscillations and acoustic pressure oscillations can lead to largeamplitude pressure oscillations within the combustor.

耦合振动和燃烧声压的振荡可能导致largeamplitude压力振荡的燃烧室。

An expression for acoustic wave amplitude as a function of modulation frequency and relaxation time has been derived.

推导了光声信号振幅与入射光调制频率和样品分子振动－平动弛豫时间的函数关系。

Numerical simulation of structural acoustics is an important aspect of noise and vibration control domains.

结构噪声数值模拟是振动与噪声控制领域的一个重要研究方向。

The main purpose of this paper is to design a real-time vibration signal acquisition and analysis system.

本文研究的主要目的是开发可以实时采集与分析振动信号的软件系统。

In chapter Ⅵ, the vibration data acquisitor system in this dissertation is summarized.

第Ⅵ章，对本文的振动数据采集器系统，进行总结。

In chapter 8, the research works of the project have been summarized, and the research and application prospects in the future are forecasted. In the Part B of this dissertation, the DSP based vibration data acquisitor system for rotating machinery has been developed.

论文下篇，以工程应用为目的，以微电子技术、信号处理技术、数字信号处理器DSP和微机应用技术为手段，研制了基于DSP的振动数据采集器系统。

In chapter Ⅴ, from the point of the system'view of the vibration data acquisitor for rotating machinery, the major—minor processor structure in this system is analysed, the characteristics of the major processor DSP56001, the function of the minor microcomputer PC have been explained. The Memory Spaces Configuration, Synchronous Serial Interface , Serial Communications Interface , Host— Port and Peripheral Buses of the DSP system are summarized, and its timing is explained. The DSP system interfaces with the boards have been explained further.

第Ⅴ章，从旋转机械振动数据采集器的系统出发，分析了该系统的主—次处理器结构，说明了主处理器DSP56001的特点及次微机PC的地位和作用；概述了DSP系统的存储器空间设置、同步串行接口、串行通讯接口、主接口和外设总线，并说明其工作时序；对DSP系统与各模块之间的接口关系，作了进一步的说明。

The influence of different substituents to the addition reaction also has been investigated to research into the reaction law.

优化得到各驻点的几何构型，通过振动分析和内禀反应坐标对过渡态进行了确认，解析了反应路径。

First, for the Rayleigh-Ritz method, a general formula is derived in this paper for elastic vibration problem in which the admissible function can be taken in arbitrary form.

第一，利用Rayleigh—Ritz法推导了取任意形式容许函数时弹性体振动问题的一般解。

The model was solved by the Ritz method, and the orthogonal polynomials generated by the Gram-Schmidt process were employed as admissible function for both disk and blades. With this approach, the matrix derived from kinetic energies becomes diagonal and numerical manipulation can become easy and stable.

采用Gram-Schmidt方法生成正交多项式作为李兹容许函数进行模型的离散化，简化了所得到的频率方程求解过程，有利於求解过程的数值稳定性，并可方便地通过对方程系数性质的分析了解结构振动模态的性质。

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