振动

According to an on-site measurement of the impact of underground rail trains motion vibration on the place where the odeum is to be constructed,it shows that the maximum vibration impact of the underground rail train on the constructing site is 41～48 dB.

现场测量了地铁列车运行振动对拟建音乐厅场址的环境影响，结果表明地铁对该场址的振动影响最大为41～48dB，频谱特性集中在16～63Hz范围内；同时预测了音乐厅建成后，室内受地铁列车运行振动产生的二次空气声影响将达29～30dB，将超过预定的25dB控制目标值。

By means of the orthogonal expansion technique, the coupling system solutions are finally obtained. Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. Incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration.

然后利用上述解析解分析了饱和土层复阻抗，并从饱和土波动理论出发，建立了桩纵向振动引起的饱和土层振动模式，剖析了辐射阻尼产生机理，研究了桩纵向振动引起的饱和土层中剪应力及孔隙水压力分布。

Finally we consider the half-linear neutral delay dynamic equation A comparison result for the oscillation between the equation and a first order delay dynamical inequality is established.

在本章最后，考虑半线性中立型时滞动力方程建立了方程的振动性与一个一阶时滞动力不等式振动性的比较结果，在此基础上，给出了方程所有解振动的几个充分条件。

Vibration is oscillatory motion resulting from the application of oscillatory or varying forces to a structure.

振动摆动由振动或作用在机构的力的变化引起振动的摆动。

According to thermoelastic deflection of the V-shaped titled beam, the forth-factorially partial differentiation equation is used to describe the dynamic performance. Then the natural frequency and the mode of the actuator are obtained through analyzing of free vibration modal.

根据硅微致动器V型斜梁热弹性应力变形，推导出弯曲振动的四阶偏微分方程，通过其自由振动模态分析，得到了斜梁弯曲振动的各阶固有频率和振型。

The free vibration of a nonlinear elastic rectangular plate is explored, considering influence of material nonlinearity and static-load in plane on its dynamic characteristics. Exact solution to free vibration of each mode of the rectangular plate is obtained according to the fixed point theory of partially ordered space. So the whole process of free vibration is described.

对非线性弹性矩形板的自由振动进行了研究，考虑了材料非线性和面内静载对板动力特性的影响，并根据半序空间的不动点理论求得该矩形板在自由振动时各阶模态的精确解，描绘了其自由振动的全过程。

Proceeding from the kinetic equation, the occurrence of muscular fibre spontaneous oscillation is explained in a natural way, the period of isotonic spontaneous oscillation and the oscillation curves are consistent with experimental data, and some new theoretical results are presented.

从动力学方程出发，肌纤维自发振动的发生条件得到了自然解释，所给出的振动周期和振动曲线同实验结果相符，并给出了一些新的理论结果。

At last,simulation research is carried out on radar echo of two same frequency vibration scatter points.Theoretical annlysis and simulation result indicate that the model is effective and that the periodicity of amplitude modulation function and phase modulation function is invariable as the number of scatter points increased,but,their amplitudes are variational.

最后对两个同频振动散射点合成雷达回波进行了计算机仿真研究，理论分析和仿真结果表明，该模型是有效的，并且随着同频振动散射点数的增加，其幅度调制函数和相位调制函数的周期性不发生变化，只是它们的值会随着振动点数的增加而改变。

4 Kinds of ways of influence analysis on safety of the near building structures were presented by analyzing the theory of vibration-impact pile driver system and the soil vibration.

通过对振动打桩机系统的理论分析和土体振动分析，提出了施工振动对邻近房屋结构安全性影响分析的4种方法。

Kinds of ways of influence analysis on safety of the near building structures were presented by analyzing the theory of vibration-impact pile driver system and the soil vibration.

通过对振动打桩机系统的理论分析和土体振动分析，提出了施工振动时邻近房屋结构安全性影响分析的4种方。

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。