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。
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。
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。
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。
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。
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