The component having the lowest frequency in a complex vibration (fundamental frequency or first harmonic).
复杂振动中频率最低的成分(基频或一次谐波)。
The experiment research on laser micro-Doppler effect for detecting complex vibration of moving target is developed.
建立了激光微多普勒效应探测系统，开展了激光微多普勒效应探测运动目标复合振动的实验研究。
The experimental results demonstrate that this way is extremely reliable for measuring complex vibration type of blade.
试验结果表明这种方法用于测量叶片的复杂振型是十分可靠的。
It is important to exactly extract impulse response information from complex vibration signals for mechanical fault diagnosis.
在复杂的振动信号中准确提取出冲击响应信息在机械故障诊断中具有重要的意义。
At last, this algorithm was applied to separate the practical rotor's vibration signals, the rotors' complex vibration signals are separated successfully.
应用该算法成功实现了实测转子复杂混叠振动信号的分离。
The study on the transmission of power flow in complex vibration system is a valuable research issue in vibration field and the key research in the vibration engineering field.
复杂隔振系统的振动传递特性研究是振动噪声控制领域具有实际工程意义的研究方向，是振动工程界当前的热点研究问题。
The vibration transmissibility of the vibration isolation system under complex vibration environment with the floor disturbance and the direct disturbance is defined and studied.
定义和研究了在基础干扰和直接干扰同时作用的复杂环境下隔振系统的振动传递率问题；
While introducing noise reduction evaluation criteria, which based on class separability measure for noise reduction, this paper evaluated the noise reduction effect of complex vibration signals.
同时引入基于类可分离性测度的降噪评价准则，实现了对复杂振动信号的降噪效果的评价。
The results and discussions are given as references for relevant researchers., meanwhile a research base for the dynamic characteristics analysis of airplane parts with Complex vibration is provided.
计算方法和结论可供相关人员参考，同时为今后研究在复杂振动情况下飞机元件的动态特性分析奠定了基础。
Vibration isolating grommets are standard for every hard drive and a complex airflow cooling design to maximise airflow and cooling effects with minimum noise.
振动绝缘索环对每种硬盘驱动器和复杂的气流冷却设计最大限度的气流和最小限度噪音的冷却效果中的一种标准。
Vibration characteristics of a complex system directly to influence is a current problem for engineers.
有目的地影响复合系统的振动特性是开发工程师的现实任务。
Caused by the earthquake ground vibration is a complex exercise, it is by the P-wave and S-wave interaction results.
地震所引起的地面振动是一种复杂的运动，它是由纵波和横波共同作用的结果。
This paper gives a new analytical solution of the free vibration of an arbitrary-shaped plate with complex boundary conditions.
本文给出了复杂边界条件下任意形状板的自由振动分析的一个新的解析解法。
Vibration of low-head radial gate is a very complex that has become a hidden problem affecting the safety operation of water project.
低水头弧形闸门振动是一个非常复杂的问题，是影响工程安全运行的一大隐患。
This method can be applied to the coupled vibration problem with complex boundary condition.
本方法可以适用于这类边界条件复杂的耦合振动问题。
Thus, the entry into the vibration of love, sometimes called by your people the vibration of understanding, is not effective with the present societal complex.
因此，进入爱的振动的入口，有时你们称为理解的振动，这在你们目前的社会复合体中还不是切实有效的。
In this paper, an improved dynamic substructures method is described. The problem of torsional vibration of diesel complex shafting is analysed with this new method.
本文给出了一种改进的动态子结构法，并用该方法分析内燃机复杂轴系扭转振动问题。
The results obtained not only reveal its briefness, high precision, and its extensiveness but also provide a reliable premise for the vibration analysis of more complex sector plates.
数值计算结果表明该方法不仅具有较高的精度和稳定性，而且还为分析更为复杂的扇形板结构的振动问题提供了可靠的前提。
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.
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 results obtained not only reveal its briefness, high precision, and its extensiveness but also provide a reliable premise for the vibration analysis of more complex annular sector plates.
计算结果表明，该方法不仅运算简捷、精度高、适用性强，而且为分析更为复杂的环扇板的振动问题提供可靠的基础。
In this paper, a fuzzy logic control based on genetic algorithms for complex nonlinear vibration systems of multiple degree of freedom is proposed.
本文对于复杂的多自由度非线性振动系统提出了基于遗传算法的主动模糊控制方法。
The significance for the vibration control of complex structures under complicated excitations is offered in this thesis.
上述研究获得的结论对于复杂结构在复杂激励条件下的振动控制具有重要的指导意义。
The analysis of related theory proved that the fault vibration signal of rotating machinery is a complex signal which has some components with single frequency.
通过对相关理论的分析证实了旋转机械的故障振动信号基本上是一个复合信号。
In complex branched transmission systems, the calculation of the torsional vibration demands the computer to have more memory and fast speed.
在各种复杂的分支传动扭振系统中，由于计算工作量大而对计算机内存及速度提出了一定的要求。
Centrifugal hydrogen compressor has problems of high rotating speed, complex structure and high difficulty in vibration cause analysis.
离心式氢气压缩机转速高、结构复杂、振动原因分析难度高。
The deformation and vibration analysis of cables under common loads is therefore a complex nonlinear problem as geometric non-linearity is generally involved.
因此悬索在一般荷载下的变形和振动问题便是一个较为复杂的几何非线性问题。
Traditional vibration feeders are mainly driven by electromagnet, which has the deficiency such as large volume, heavy mass, complex structure and loud noise.
电磁振动送料器在工业自动化生产线上已得到了广泛的应用，但其存在噪音大、结构复杂等缺点。
The new extrusion equipment has been designed to research the rheological behavior of LLDPE extrusion moulding in complex stress filed of vibration and shearing.
利用振动剪切挤出装置研究了线性低密度聚乙烯(LLDPE)在振动与旋转剪切复合力场中挤出成型时的流变行为。
The proposed method enables to simulate complex flow induced vibration occurring in heat exchanger tube bundles at sub-critical Reynolds number.
研究结果为亚临界雷诺数范围内热交换器管束的复杂流体诱导振动等问题提供了一种可能的计算方法。
The proposed method enables to simulate complex flow induced vibration occurring in heat exchanger tube bundles at sub-critical Reynolds number.
研究结果为亚临界雷诺数范围内热交换器管束的复杂流体诱导振动等问题提供了一种可能的计算方法。
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