Sometimes,people could finish some work by vibration theory.

有时，人们利用振动原理来完成某些工作。

Vibration of motorcycle is a difficult problem motorcycle producers are faced with.

摩托车振动是当前摩托车企业面临的技术难题。

Chaotic Chatter Control AnalysisTwo-dimension vibration model of machine tool cutting system is showed in Fig.1 Fig.1 two dimension vibration model of machine tool cutting systemAssume cutting force is and the displacement of cutting blade in can be expressed by .

2．混沌颤振控制分析机床切削系统两维振荡器模型如图1所示。 假设，切削力为，切削刃在方向的位移表示为。

Simulation results represent that the proposed algorithm improves the performance of network system, accelerates the response rate and decreases the high frequency vibration of queue length under different simulation scenarios.

仿真实验结果表明，在不同的网络场景和条件下，基于Smith原则和模糊控制的拥塞控制策略缩短了系统的响应速度，降低了队列长度的高频振荡特性。

These devices use their sensors to monitor environmental conditions, such as temperature, sound, pressure, vibration, and so on.

这些节点设备通过自身的传感器来监测周围的物理或者环境状况,比如温度,声音,压力,震动等。

For the metal fatigue, combined with the aircraft present conditions, the measurements such as shock absorption and vibration prevention should be taken.

针对疲劳破坏的特点，结合飞机现有的条件，采取减振、避振等措施。

In this essay, the answer to natural frequency of vibration and periodic time will given in the response spectrum method.

而本文是通过反应谱法，求解泵站的自振频率、周期。