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固有频率     
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  natural frequency
     The Relationship Between the Natural Frequency of the Transverse Vibration of the Pile with Free Length and the Coefficient of Subgrade Reaction
     有自由长度桩横向振动的固有频率与地基抗力系数的关系
短句来源
     Analysis of Natural Frequency of a Vibro-bench
     大型振动台台体固有频率分析
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     CALCULATION AND ANALYSIS OF THE NATURAL FREQUENCY AND THE PRINCIPAL VIBRATIONAL PATTERN OF THE MAIN DRIVE ON A 4200 HEAVY PLATE MILL
     4200厚板轧机主传动系统固有频率与主振型的计算及分析
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     The Simple Calculation of the Natural Frequency of Small Vibration of the Single Degree of Freedom Systems
     单自由度系统微振动固有频率的简化计算
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     Natural Frequency of Vibration of Contactor and Convergence of the Approximation by Finite Element Method
     接触器振动的固有频率及其有限元逼近的收敛性
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  inherent frequency
     The first-order inherent frequency of the derrick in the regular working position is 15. 44Hz and that in the lowest working position is 16. 88Hz.
     井架结构第一阶固有频率在正常工作位置时为15.44Hz,在最低工作位置时为16.88Hz。
短句来源
     Analysis about ANSYS technical C -Type spring tube inherent frequency sensitivity
     基于ANSYS技术的C型弹簧管固有频率灵敏度分析
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     Research On The Vibration Stimulus Source and Resonance Inherent Frequency of 4135D Diesel Generator Group
     4135D柴油发电机组振动激励源与共振固有频率的研究
短句来源
     The finite element analysis of C-type spring tube inherent frequency sensitivity
     C型弹簧管固有频率灵敏度的有限元分析
短句来源
     Adopting the principle of hydrodynamics, applying the research results of being, I have calculated that the inherent frequency of liquid transverse swashing in full load G70K is 5.1805, 8.8006 and 11.9639. The Min. frequency is close to horizontalvibration frequency of 3.75(G79K6283954) and 4.0~4.9(G70H6450103), showing that liquid & solid coupling vibration is much possible to happen;
     本文根据流体力学的基本原理,应用液体横向晃动数学模型,计算出标记载重的G70K液体横向晃动的固有频率为5.1805、8.8006、11.9639,最小频率与环线试验报告中横向振动频率3.75(G79K6283954)及4.0~4.9(G70H6450103)比较接近,这说明液固耦合振动是存在的;
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  natural frequencies
     The results show that the natural frequencies of the double J-like model are less than those of the traditional model. when the scale parameters of the double J-like model R=1.6 mm, r=1.2 mm and H=8 mm, its three natural frequencies have been given, f_1=30.90 Hz,f_2=105.99 Hz, f_3=130.84 Hz.
     分析结果表明,双J形隔震封装模型的固有频率明显低于传统的隔震封装模型的固有频率,双J形隔震封装模型尺寸参数为R=1.6mm,r=1.2mm,H=8mm时,其固有频率为:左右振动模式f21=30.900Hz,前后振动模式f22=105.99Hz,上下振动模式f23=130.84Hz.
短句来源
     It is showed by the analysis results that the natural frequency is affected by the ratio J_e/J_0.When J_e/J_0 =5 and J_e/J_0 =25,the difference between the natural frequencies is 7.38%.
     分析结果表明,等效圆盘的转动惯量与采油杆柱转动惯量的比值Je/J0对杆柱扭转振动的固有频率有一定影响,当Je/J0=5和Je/J0=25时,基频相差7.38%。
短句来源
     The natural frequencies and Q-values at atmospheric pressure are 2800Hz and 1613 for driving mode, and 3000Hz and 1613 for sensing mode, respectively.
     陀螺驱动模态和检测模态的固有频率和Q值的设计值分别为2800Hz和1613,3000Hz和1613。
短句来源
     Calculating Natural Frequencies of Multi-span Tube by National Standards GB151-1999
     按GB151—1999计算多跨管的固有频率
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     The natural frequencies of the innovative double J-like anti-shock packaging model (10 ~ Hz) is far less than the traditional models with the same material parameters.
     在材料参数相同的条件下,新颖双J 形隔震封装模型的固有频率(10~2~10~4Hz)远低于传统的隔震封装模型的固有频率
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  intrinsic frequency
     2. Build finite element analysis model of the important parts in the Self-stabilization platform, and analyze the rigidity of main parts and intrinsic frequency of the whole system.
     2.建立了自稳定平台主要零部件的有限元模型,分析了模型中各主要零部件刚度和系统整体的固有频率,在模型分析的基础上,对稳定平台零部件进行了优化设计。
短句来源
     A Quantitative Relationship Between pK_a and Molecular Vibration Intrinsic Frequency of Nonmetal Binary Hydrides
     非金属二元氢化物分子振动固有频率与pK_a常数的定量关系
短句来源
     Optical properties identify the intrinsic frequency of the BC3using the Lorentz model. At 0GPa, they are 2.4eV, 3.6eV, 5.7eV and12.5eV;
     由光学常数的色散曲线,得到了BC3在0GPa时的固有频率值,它们大约为2.4eV,3.6eV, 5.7eV和12.5eV。
短句来源
     The testing modal analysis done on the crankshaft with the random signal and vibration analysis CRAS V4. 1 shows that the relative error between its intrinsic frequency and the computed result is under 5. 7%, which proves the correctness of the computed result and provides reliable data for the dynamic character analysis of constructions.
     利用随机信号与振动分析系统 CRAS 4.1 版对该曲轴进行了试验模态分析,其固有频率与计算结果的相对误差在5.7%之内,验证了计算结果的正确性,为结构的动态特性分析提供了可靠的数据。
短句来源
     Study results show that:the driving system could be simplified to a 1 freedom,damped,2 degree oscillating system,and its intrinsic frequency f n =84±1.3 Hz,damp ratio ξ =0.5±0.023;
     结果表明:驱动系统可以简化为一个单自由度有阻尼的二阶振动系统,其固有频率和阻尼比分别为:fn=84±1.3Hz,ξ=0.05±0.023;
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  natural frequency
This study investigated the dynamic modulus of elasticity (DMOE) of wood panels of Fraxinus mandshurica, Pinus koraiensis, and Juglans mandshurica using the natural frequency measurement system of fast Fourier transform (FFT).
      
The natural frequency reached 1.201-kHz using finite element analysis, and the practice measurement result was 1-kHz.
      
Using the differentials of a stiffness matrix to design parameters, a method for calculating the sensitivity of natural frequency is presented.
      
Through the mode analysis of the liquid-solid coupled system, the first-order natural frequency, diaphragm vibration shape and amplitude-frequency relationship are obtained.
      
The natural frequency of the system was less than that of the structure on rigid foundation if the SSI is not taken into account, while its damping ratio was larger than that of the structure.
      
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  inherent frequency
Code combining is used to exploit the multiple signal copies resulting from the inherent frequency diversity of spread spectrum.
      
Even though the gain due to selection in frequency selective channels is reduced compared to that in flat fading channels due to the inherent frequency diversity, the performance improvement is significant when the system is interference limited.
      
Each device operates at some inherent frequency, with wide variation among devices.
      
The windowing helps by reducing the inherent frequency broadening of each interferer caused by the finite duration of the FFT.
      
  natural frequencies
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
      
Contour plots of normalized crack location versus normalized crack size were plotted by using the first three natural frequencies as the inputs.
      
The estimations of natural frequencies and damping coefficients of the platform found as a result of data processing of microacceleration measurements made during its free oscillations are obtained.
      
Determining the natural frequencies of fluid oscillations in complex pipelines
      
Below we formulate the problem of the natural frequencies of small oscillations of a liquid for the general case of an equilibrium liquid surface in a weak potential mass force field.
      
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  intrinsic frequency
On this assumption, deviations of the Zeitgeber-frequency from the intrinsic frequency of the dependent systems cause phase-angle differences between the two systems.
      
Also, with short and relatively weak intersegmental connections, the network remains robust against perturbations as well as intrinsic frequency differences along the chain.
      
The temporal variation of the tidal component of the wind changes the observed frequency, sometimes substantially, while leaving the intrinsic frequency unaltered.
      
The intrinsic frequency and vertical and horizontal wavelengths of gravity waves in the stratosphere are 2f-3f, where f is the Coriolis parameter, and 2-3?km and 300-500?km, respectively.
      
Numerical evidence is given here that the family of such orbits is a continuous function of the rotation frequency Ω which varies between Ω?=?0, for the planar figure eight orbit with intrinsic frequency ω, and Ω =?ω for the circular Lagrange orbit.
      
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