分析动力学

The reaction mechanism of HNO2 and C6H5Br in aquepus solution with the presence of O2 or absence of O2 is studied by laser flash photolysis transient absorption spectrum technique under irradiation at 355nm.The intermediate and final products have been analyzed after the irradiation of laser.The photolysis mechanism of C6H5Br…OH has been discussed.

另外，采用激光闪光光解瞬态吸收光谱技术，从微观反应机理角度分析了无氧或氧气饱和条件下HNO2与C6H5Br的光化学反应，以及溶液经激光照射后产物的生成情况，并着重探讨了反应中间产物C6H5Br…OH的微观反应机理，得到了一些重要的动力学参数。

It is found that the flocculation impetus of fine particles is determined by.

本文从理论上分析了絮体成长的动力学过程。

On the theroy and method of analysing the longitudinal inertia force of railway goods some fresh views are presented.

本文从分析作用于货物的纵向惯性力入手，对铁路货物运输的稳定性问题进行了理论探讨，导出了车载货物的纵向动力学方程及其有关推论，对铁路货运领域在货物纵向惯性力问题上的理论和方法提出了一些新的见解，建议统一查定我国铁路货车在各种运行和调车工况下的加速度值，做为日常确定货物稳定性的科学依据。

At the same time, the curve of inertia force and inverse restriction force of some typical motions are drawn by ADAMS, which makes the analysis of dynamics further perfect.

同时，利用 ADAMS 软件绘制机床在几种典型运动中的惯性力和约束反力曲线图，以进一步完善机床的动力学分析。

Firstly, the equation for stress intensity factors under static uniform pressure is used as the reference case, and then the weight function for a thick-walled cylinder containing a radial edge crack can be worked out. Secondly, the dynamic stresses in uncracked thick-walled cylinders are solved under internal impulsive pressure by using mode shape function method. The solution consists of a quasi-static solution satisfying inhomogeneous boundary conditions and a dynamic solution satisfying homogeneous boundary conditions, and the history and distribution of dynamic stresses in thick-walled cylinders are derived in terms of Fourier–Bessel series. Finally, the dynamic stress intensity factor equations for thick-walled cylinder containing a radial edge crack subjected to internal impulsive pressure are given by dynamic weight function method.

首先采用静态内压下的应力强度因子作为参考解，得到了带径向边裂纹厚壁圆筒的权函数；然后用振型函数方法推导无裂纹厚壁圆筒在冲击内压下的动应力响应，分析中将相应的弹性动力学方程解分为满足非齐次边界条件的准静态解和满足齐次边界条件的动态解的叠加，利用傅立叶-贝塞尔级数展开，推导出了厚壁圆筒内动应力的响应历程和分布规律；最后由动应力权函数方法导出带径向边裂纹厚壁筒在冲击内压下的动态应力强度因子计算公式。

In this paper, viscoelastic fractional derivative model is used for the first time in dynamic analysis of SRM, and various verification tests are carried out.

本文首次将粘弹性分数阶导数模型用于发动机的动力学分析，并进行了多种试验验证。

In this dissertation,the fractional derivative constitutive relations are applied tostudy the static and dynamical problems of viscoelastic structures in theoreticalanalysis and numerical simulation.

利用分数微分型本构关系，对粘弹性结构的静、动力学行为进行理论分析和数值模拟。

The results of isothermal crystallization kinetics study indicates that the crystallization half-time t(subscript 1/2 of HIPP is longer, while its activation energyand chain folding surface free energy σ(subscript e are higher, compared with those of iPP.

等温结晶动力学分析结果表明，HIPP的半结晶时间、结晶活化能及分子链折叠端表面自由能均高于iPP。

The theoretical analysis for the dynamics behavior of the freight car has also been done,and the influences of the main parameters are analyzed.

对货车转向架性能进行了必要的理论研究，分析了主要参数对转向架动力学性能的影响规律，并提出了转向架设计和定型的意见。

Dynamic characteristics are analyzed such as strong nonlinearity, frequentness and randomicity of running state switching, aerodynamic instability of fixed pitch wind turbine, immen...

分析大型风力发电机组的动态特性，如强非线性、运行工况的频繁随机切换、定桨距风轮空气动力学的不稳定性、有效风速的不可测性和干扰因素多等特点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。