我们认为由于表面原子较大的表面振动，表面存在“劈裂位置”。
We pro-posed the existence of split-positions on the surface due to larger surface vibrations.
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。
This paper introduces the basic method for diagnosing interior faults of diesel engine by the use of surface vibration signals.
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。
An experimental study on the engine noise source identification by the method of surface vibration measurement technique is carried out in this paper.
为由钢轨表面振动直接求得钢轨辐射噪声提供了理论基础，简化了计算过程。
It provides a theoretical foundation for getting the rail noise power from the rail vibration directly and simplifies the calculating process.
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；
The results show that the surface vibration of the crankcase is induced by 3-D vibration of the crankshaft.
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。
Several methods to reduce block surface vibration response by changing the local stiffness of the block are discussed.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
Based on the acoustic radiation mode analysis, the transfer matrix relating the pressure at every field point to normal component of surface velocity is formed.
施加高频电磁场的铸坯与传统连铸坯相比，表面振动痕深度明显减小，且表面光滑。
Compared it with conventional billet, billet cast with high frequency electromagnetic field, on which depth of surface oscillation mark was decreased remarkably, had a smooth surface.
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.
在某一个时期，我能听到自己的声音由于薄的我的一个桌子表面振动扬声器站立得住。
At one point, I was able to hear my own voice due to the thin surface of one of my tables vibrating the speaker stand.
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。
An experimental study on engine surface vibration and radiated noise is carried out in this paper.
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。
The real detecting result shows that it is feasible to use the engine surface vibration signal to diagnose main bearing shell abnormal wear trouble.
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 laser vibrometer based on the surface vibration for measuring and analyzing the radiating noise of the 4120SG diesel engine is proposed.
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。
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.
对内燃机缸盖系统的振动激励及表面振动信号的特性进行分析，建立了缸盖系统的振动模型。
This paper analyses the properties of the excitation and response of an engine cylinder head system and establishes the vibration model of the cylinder head system.
又通过发动机机体表面振动加速度，确定活塞敲击噪声产生的根源在于活塞与缸套的碰撞冲击。
It has also been clear that the source of piston knock noise is the impact between piston and cylinder sleeve by the vibration acceleration of the engine's body surface.
根据缸盖系统的动态传递函数设计反相滤波器，进行了直接由缸盖表面振动信号识别气缸压力的研究。
Based on the analysis of the data obtained, the inverse filter is designed, and the measurement of the cylinder pressure from the cy...
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 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.
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。
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.
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。
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.
采用表面振动法进行了柴油机表面辐射噪声的诊断，并对附加自由和复合阻尼的薄壁件进行了声辐射效率试验研究和整机试验。
The experiment of sound radiation efficiency and engine noise test were carried out when the engine was equipped with thin-wall components with free and compound damping.
在用有限元法分析结构动态响应特性的基础上，利用有限元分析得到结构表面振动速度分布，分析表面阻尼处理板结构的声辐射。
Based on the finite element analysis results of the dynamic properties of the structure, the acoustic radiation of the structure is analysed using the results of the surface velocity distribution.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
通过数值计算给出了地基表面振动的动力时程和三维波动场的分布，发现当移动荷载的马赫数接近或大于1.0时地基中产生明显的波动传播现象。
The time histories of ground responses and wave motions are presented, and it was found that significant wave propagations are generated when Mach number of moving load approaches or exceeds 1.0.
此设备使用尖锐点振动悬臂，它会扫描样品表面、拓扑结构和样品的属性，以提供非常详细的图像。
This device USES a sharp point mounted on a vibrating cantilever, which scans the surface of a sample and reacts to topology and the properties of the sample to provide highly detailed images.
虽然表面看来是很坚固，但如果在特定的共振频率中受到振动的话，建筑物可以变得非常脆弱。
Although seemingly solid, buildings can become remarkably fragile if they are shaken at a particular resonant frequency.
表面贴装电子封装提供抗水，油，灰尘，高温，冲击，振动和整体恶劣环境。
Encapsulated surface mount electronics provide resistance to water, oil, dirt, high temperatures, shock and vibrations and overall harsh environments.
当这个小装置以每秒60亿周的高频速度振荡时，它表面的“压电”材料会产生一个很容易被检测到的振动电场。
As the doohickey hummed away at a very high frequency-a whopping 6 billion cycles per second-the "piezoelectric" material in it produced a warbling electric field that was easy to detect.
当这个小装置以每秒60亿周的高频速度振荡时，它表面的“压电”材料会产生一个很容易被检测到的振动电场。
As the doohickey hummed away at a very high frequency-a whopping 6 billion cycles per second-the "piezoelectric" material in it produced a warbling electric field that was easy to detect.
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