自振

First of all, this paper establishes the simulation method for fluctuating wind with a multivariate normal distribution model and an autoregressive filter. On the basis of simulation results of the wind field, the time dispersion of the buffeting forces by turbulent wind is achieved.

首先，本文利用多变量正态分布模型并结合线性滤波法的自回归模型建立了脉动风的仿真模拟方法，从而实现了对紊流抖振力的时间离散。

To best achieve the working performance of the said concrete, with the help of theology theory in the research, we have analyzed the principle of free-vibration densifying and shaping of mixed concrete, that is, with the perquisite of fluidity, the concrete should have good property of filling-up-space, penetration through voids of fixed steel reinforcement, adherence and prevention from losing water and segregation, and the conflict between anti-segregation and deforming capability should be sorted out.

为得到自密实高性能混凝土的最佳工作性能，在研究中借助流变学理论，分析研究了混凝土拌合物免振捣成型和密实的机理，在大流动性的前提下，要求混凝土具有良好的填充性、钢筋间隙通过性和粘聚性，防止泌水、离析，解决变形能力与抗离析性能力的矛盾。

These systems include neutral particles with general spin and magnetic moment moving in an arbitrarily varying uniform magnetic field or in the field of a circularly polarized electromagnetic plane wave, the generalized time-dependent harmonic oscillator, and Heisenberg model in a rotating magnetic field.

包括具有一般自旋和磁矩的中性粒子在任意时变均匀磁场中的运动、在圆偏振平面电磁波场中的运动，一般含时谐振子体系，旋转磁场中的 Heisenberg 模型等。

Concerning the polarization coupling between Rayleigh particles irradiated by various polarized plane light wave, we use self-consistent method and dyadic Green's function, with the near-field condition of kR《1, and neglecting retardation, to derive analytical expressions for the transverse and longitudinal components of optical binding forces.

针对不同偏振态平面光波诱导下瑞利粒子间极化耦合作用，运用自洽场方程和并矢格林函数，在kR《1的近场条件下，忽略延迟效应，分析推导了横向和纵向光学束缚力公式。

So, the primary condition to improve the self-excitation, can through the dynamic analysis result for complete structural of the machine tools to finish the structure design.

因此改善自激激振的先决条件，可藉由工具机整机结构的动态分析结果，来完成结构设计。

Flutter is a kind of self-excited vibration induced by wind act on structures.

颤振是一种由风的作用引起的结构物的自激振动。

Airflow just for working medium place a premium on air flow excitation, which belong to self-excited vibration.

气流激振是由工作介质气体诱发的振动，属于自激振动的范畴。

And the influence of various parameters to self-excited shimmy was analyzed.

转向机构刚度、轮胎侧偏刚度和拖距对自激摆振的幅值影响较大。

As shown in some papers the self-excited vibrations are major reasons of causing serious damage to the rotating machinery.

有关资料表明，汽轮发电机组的重大事故的诱因中轴系振动已远远超过转子裂纹，其中自激振动和扭振引起的故障占绝大多数。

Decresing speed is the only effective way to eliminate the chatter when the self-excited vibration has occured.

自激振动的振源在辊缝，能量来源是轧机的动力源——轧机主电机。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。