In fact, the earthquake is that the earth is the earths surface vibration.
事实上，地震是地球是地球表面的振动。
The equation of motion for a spherical surface vibration is studied, and the period is analysed.
讨论了球面摆的运动方程，分析了摆球运动的周期性。
An experimental study on engine surface vibration and radiated noise is carried out in this paper.
本文以一台车用六缸柴油机为例，研究了发动机的表面振动和发动机的表面辐射噪声。
Heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone.
以压模铸造的坚固外壳及话筒底部的防滑矽泡棉，可减低桌面震动对话筒的影响。
The results show that the surface vibration of the crankcase is induced by 3-D vibration of the crankshaft.
纵振与表面振动的总体相干水平不高，只在部分频率段具有较高的相干函数；
Several methods to reduce block surface vibration response by changing the local stiffness of the block are discussed.
通过改变机体表面局部刚度，对减小机体表面振动响应的几种方法进行了探讨。
This paper introduces the basic method for diagnosing interior faults of diesel engine by the use of surface vibration signals.
本文介绍了利用表面振动信号进行柴油机内部故障诊断的基本方法。
Amplitude characteristics of vertical ground surface vibration caused by explosion seism are studied by using the experimental method.
对地面附近爆炸地震引起的地面竖向振动幅值特性进行了实验研究。
The laser vibrometer based on the surface vibration for measuring and analyzing the radiating noise of the 4120SG diesel engine is proposed.
以4120SG柴油机为研究对象，提出基于激光测振的表面振动法测量柴油机辐射噪声。
The real detecting result shows that it is feasible to use the engine surface vibration signal to diagnose main bearing shell abnormal wear trouble.
现场实测结果表明，利用柴油机表面振动信号来诊断柴油机主轴瓦异常磨损故障是可行的。
An experimental study on the engine noise source identification by the method of surface vibration measurement technique is carried out in this paper.
通过测量柴油机表面振动速度的方法对其进行了表面噪声源识别的研究。
Earthquakes are of the earth's surface vibration, this is like the wind, rain, and lightning, debris flow, volcanic outbursts on earth, is often happened a natural phenomenon.
地震是地球表面的振动，这就像风、雨和闪电、泥石流、火山爆发一样，目前地球上经常发生的一种自然现象。
The radiated noise of the dynamical mechanism comes from its surface vibration. Controlling the vibration to reduce the radiated noise is a long-term aim for most researchers.
动力机械的辐射噪声产生于结构表面振动，通过控制振动来控制其辐射噪声是机械工程师长期追求的目标。
Analysis the demodulated resonance technique (DRT), the result shows that it is effective and feasible to diagnosis faults of bearing un-disassembly using surface vibration signal.
分析了应用共振解调原理，利用轴承外表面振动信号对机器进行不解体故障诊断是可行的。
According to the actual operational condition of engine, calculate dynamics with different rotational speed and breakout pressure, and get the surface vibration speed stage of engine.
根据车用发动机的实际使用工况，在不同转速及爆发压力下对其进行动力学计算，得到发动机的表面振动速度级。
Based on the engine vibration character induced by the piston impact on the cylinder, it is practical to judge the clearance condition between them by engine surface vibration intensity.
本文讨论了活塞撞击引起的发动机振动特性，指出利用表面振动信号判断活塞缸套间的间隙状态是可行的。
This article mainly concentrated on the parameters transformation of vibrating compaction, hitting of roll compacted concrete, and surface vibration on the basis of experimental research.
通过试验研究，本文论述了碾压混凝土的振动碾压，击实和表面振动的参数变换关系。
The earthquake is the earth surface, it's like a rapid vibration tsunami, tornado, freeze disaster on earth as often happens, is a kind of natural disasters.
地震就是地球表层的快速振动，它就像海啸、龙卷风、冰冻灾害一样，是地球上经常发生的一种自然灾害。
This paper presents a method of using self made vibration source and vibrometer to excitc surface waves (ripples) to produce interference.
介绍了用自制的振源、振子来激发表面波（涟波）产生干涉，从而测出液体的表面张力系数的方法。
Upon the surface of the earth we hold the vibration of honor which is a silver ray that harmonizes the love between individuals or within nature.
在地球表面，我们持有尊重的振动，这是一种协调了在人类之间的爱，或者大自然当中的爱的银色光线。
In diamond ultra-precision turning, there is unavoidably, a relative vibration between the tool and the workpiece, which influences the quality of workpiece surface.
在金刚石超精密车削加工中，刀具与工件之间不可避免地存在一定的振动，从而影响工件表面质量。
It is proved by experiments that under appropriate machining conditions, abrasive belt vibration grinding can not only reduce workpiece surface roughness but also improve work-piece form accuracy.
实验表明，在适当的加上条件下，砂带振动磨削不仅可以降低工件的表面粗糙度，而且可以提高工件的形状精度。
The test result shows tha the influence of related displacement on surface finish is linear and related to amplitude and frequency of vibration and spindle speed.
试验结果表明：相对位移对表面光洁度的影响是线性”的，不仅与振动幅值有关而且与振动频率及主轴转速有关。
The results showed that, with appropriate wheel vibration frequency or appropriate workpiece rotate speed, the surface precision of workpiece can be improved.
结果表明：合理选择砂轮振动频率或工件主轴转速能有效提高工件表面精度，降低表面波纹度。
The vibration characteristics of external plunge grinding and the ground surface profile error are investigated through experiments analysis.
在实验的基础上，对磨削过程振动特征以及由此产生的磨削表面形貌误差进行研究。
In addition, this Paper describes the atomic vibration in different surface lattice waves.
本文还对各种表面格波中的原子振动方式作了一定的描述。
Cutting force simulation is not only an important part of physical simulation in milling process, but also the foundation of vibration prediction and surface topography estimate.
铣削力仿真不仅是铣削加工过程物理仿真的重要组成部分，同时也是颤振预报、表面形貌评估的基础。
This paper analyzed the movement theory of lean rotate Vibration of helical surface and the motion law of materials movement.
分析螺旋面斜向扭转振动传动的原理和螺旋面上物料运动的规律。
This paper analyzed the movement theory of lean rotate Vibration of helical surface and the motion law of materials movement.
分析螺旋面斜向扭转振动传动的原理和螺旋面上物料运动的规律。
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