频率响应

The frequency and amplitude of wake force were deduced theoretically, while the influence of stator sector distribution and stator vane quantity on the wake force of vane was also discussed. Transient analysis was conducted for the forcing response of rotor blades under the same stator sector distribution and different quantities of stator vane, so an optimum asymmetry stator mistuned design was developed.

对不对称静子叶片非谐情况下激振力频率幅值进行推导，讨论了静子扇区分布和静叶数目选取对尾流激振力的影响，并对相同扇区分布不同静叶数目情况下转子叶片的强迫响应进行瞬态分析，给出不对称静子非谐设计的最优方案。

Because of the superiority of cheapness, stabiles, anti-pollution, low energy-cost, it is probability that Electro-Hydraulic proportion controls technique will replace servo valves in application of the general industry.

因此在对响应频率要求不高的一般工业应用中，有可能以其廉价、抗污染和节能等优势来取代伺服阀。

Vibration test of pole-shaped grain is conducted under various frequencies. The experiment results of acceleration frequency response is in agreement with theoretical data, which shows VFD model can also be used in SMR frequency domain analysis.

同时，杆状药柱在不同频率下简谐振动试验的加速度频响函数与VFD理论分析结果比较接近，说明这种模型也可以用于药柱的频域响应分析。

By practical engineering case,numerical analysis is done,and the natural frequency and the response to impact of the system are obtained.The numerical results show that the elastic deformation of the raft body will affect the dynamic character of the system,and the proposed model is more precise and judicious in engineering application.

结合具体的算例，求出了弹性浮筏隔振系统的固有频率和对不同冲击激励的响应，指出了筏体的弹性变形对系统动力学性能的影响，揭示了弹性模型的全面性和合理性。

With the fluid-solid coupling of train oil tank clue to train speed increase, the fluid-solid coupling modal analysis of G70B oil tank is calculated by NSYS. The finite element model of fluid-solid coupling system is set up. The fluid-solid coupling modal analysis of G70B oil tank is done for light oil tank train under different kinds of loads and its natural frequency and modal shapes are obtained.

针对列车油罐因列车提速导致液固耦合作用突出的问题，运用ANSYS软件对轻型油罐车G70B型罐体的液固辐合模态响应进行实例分析和计算；建立车载油罐的液固辐合系统有限元模型；对轻型油罐车G70B型罐体进行在不同贮液比时的液固福合模态分析，得出固有频率和模态振型图。

The demodulated resonance technique combined with spectrum analysis and fuzzy-closest-principle were developed and applied to the fault diagnosis of bearings in drilling pump.

在钻井生产现场，由于工作条件恶劣及振源多，背景噪声强烈，因而用理论计算所得到的故障特征频率与实测信号经一般频谱分析后得到的响应信息缺乏一一对应关系。

An equal cross-section blade was investigated and a finite element model was built parametrically. Geometrical parameters (such as length, width and thickness), material parameters (such as young's modulus and density) and speed of blade were considered as input random variables while the static frequencies and dynamic frequencies were output random variables. Combining the finite element method, response surface method and Monte Carlo method, the statistical properties and cumulative distribution functions of static frequencies and dynamic frequencies were obtained. Probability sensitivities analysis, which combined the slope of the gradient and the width of the scatter range of the random input variables, was applied to quantitatively evaluate the sensitivities of static frequencies and dynamic frequencies with respect to the random variables. The Scatter plots of structural responses with respect to the random input variables were illustrated how to adjust the values of the static frequencies and dynamic frequencies by changing input random variables.

文中以某试验台用汽轮机等直叶片为研究对象，考虑几何参数、材料参数和转速的随机性，通过有限元参数化建模，将确定性有限元方法、响应面方法和Monte-Carlo模拟法相结合，从而获得了叶片静频、动频的统计特性和累积分布函数；同时考虑随机变量的梯度和离散范围对静、动频的影响，通过概率敏感性分析，定量地判断出叶片静、动频对随机输入变量的敏感性；通过绘制叶片静、动频与输入变量的散点图，定量地分析了如何改变随机变量以调整静、动频率的方法。

Miniaturised mechanical sensors ,for example ,typically have a wide dynamic range and fast response times as aresult of their high resonance frequencies .

由于它们有个高频共振频率，微型机械传感器有个动态范围和快速响应时间。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。