机械波的形成需要振源和介质。
A vibration source and a medium are needed to form a mechanical wave.
发动机是汽车主要振源之一。
不同型号钻头对激振源规律影响的实验研究。
Secondly, the different model bits affect the rule of the vibration sources, which is studied.
通过空运转试验查明了机床受迫振动的振源。
The sources of forced vibration in the machine tool are found by means of the free running experiment.
实测桩顶响应信号是振源与系统频响函数的时域卷积。
The tested signal on pile head is the convolution of the vibration resource and frequency response function of itself in domain of time.
如数控机床附近有振源，则加工中心四周应设置防振沟。
Such as CNC machining center near the source, shall be installed around the anti vibration ditch.
在空气静压导轨中，节流孔形状和孔径大小是主要振源之一。
The orifice shape and aperture size is one vibration source on aerostatic bearing.
运用机械振动理论分析了发动机机体正常振动时的激振源和振动形式。
The paper analyzed the exciting vibration sources and forms while engine normal vibrating by means of mechanic vibration theory.
并在此基础上，研究了根据多输入多输出系统，在振源相关时的辨识方法。
On the basis of above, identification method on vibration source correlation of multi-input and multi-output system is studied.
所提出的研究结果为爆炸地震效应的结构响应随机振源描述提供了理论基础。
The presented results may provide the theoretical fundamentals for the description of random excitations in predicating the dynamic responses of structures to explosion seism.
介绍了振动采油的起源，室内实验研究、理论研究、振源类型及现场试验成果。
This paper introduces the origin of artificial shaking for enhancing oil recovery and its laboratory and theoretical achievements.
通过设计动态性能试验，找到了样机的振动薄弱环节和主要振源，提出了改进措施。
By making the dynamic performance test, the vibration weak points and the main vibration source of the prototype are found.
研制了一种永磁振动钻床，采用永磁材料作为振源，其结构简单，操作方便，价格低廉。
Making use of permanent magnetic material as the vibration power, a permanent magnetic vibrating drill machine is developed, which is simple in structure, convenient in operation and low in price.
实车试验结果表明，利用传递特性模型可以确定车外加速噪声的主要振源、声源及其贡献。
The results of real vehicle test show that utilizing transfer characteristics model can identify the main noise and vibration sources and their contribution to exterior acceleration noise of vehicle.
分析了发动机振源对车架振动的影响，使车架主要模态的自振频率避开了发动机转速范围；
Then the author analyses the effect of the frame vibration and tries to make the natural frequency of vibration beyond the range of engine revolution rate.
加工中心的位置应远离振源、应避免阳光直接照射和热辐射的影响，避免潮湿和气流的影响。
The machining center location should be away from the source, should avoid direct sunlight and heat radiation, avoid the influence of moisture and air.
同时，从传感器接收到的信号可能是从多个振源发出的，这就要涉及到多源信号的分离问题。
Meanwhile, the signal that we received from the sensor may be the mixed signals coming from several signal sources.
螺杆泵地面驱动装置受力复杂，振源众多，常规的振动测试对于故障的定位与诊断精确度不高。
The surface drive unit of screw pumps features in complex stress and many vibration sources, so the traditional vibration test method cannot determine the diagnosis accurately.
试验及分析表明，该车摆振主要为强迫振动，通过控制激振源、增大转向系统阻尼可抑制摆振。
The test and analysis show that the shimmy is a forced vibration and can be restrained by controlling excitation source and increasing steering system damping.
汽车动力总成振动是汽车振动的主要激振源之一，对汽车的舒适性和NVH特性有很大的影响。
Vibration of powertrain is a main vehicle vibration source of excitation in the whole vehicle vibration, which has significant influence of a car's comfort and NVH characteristics.
柴油机结构复杂，振源众多，常规的振动分析及单项指标测试对于故障的定位与诊断精确度不高。
The diesel engine is a complicated machine with many vibration sources, so the traditional vibration analysis and single parameter test method cannot determine the diagnosis accurately.
柴油机结构复杂，振源众多，常规的振动分析及单项指标测试对于故障的定位与诊断精确度不高。
The diesel engine is a complicated machine with many vibration sources, so the traditional vibration analysis and single parameter test method cannot determine the diagnosis accurately.
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