It is the natural frequency of emission of the hydrogen atoms in space.
这是空间氢原子“释放”的自然频率。
Then the natural frequency and correspondent vibration mode are gained.
从而可求出固有频率及相应的振型。
The test result shows that clamper greatly increases only the first natural frequency.
结果表明，夹板只对第一阶固有频率有较大提高。
The formulas for calculating natural frequency and vibration transmission ratio are given.
给出了钻柱轴向振动的固有频率和振动传输公式。
There is no peaking in the response but simply a smooth roll-off above the natural frequency.
响应期间无高峰期，只是简单的，在固有频率上平滑的跌落。
The location of joint surface has a close relation with the natural frequency of the structure.
接合面的位置对结构的固有频率也有较为明显的影响。
Natural frequency of tail rotor of some kind of helicopter with uncertain composites was studied.
研究具有不确定复合材料参数的某型直升机尾桨的固有频率。
Calculations were conducted of the fan rotor natural frequency, vibration modes and critical speeds.
本文针对风机转子进行了固有频率振型和临界转速计算。
In chapter three, the nonlinear natural frequency of the shallow spherical reticulated shell is solved.
在第三章中主要研究了扁球面网壳的非线性固有频率问题。
This paper takes a type gas turbine rotor as an example to analyze its natural frequency and modal shape.
介绍了某型燃气轮机转子模态试验，试验测得转子静态固有频率和模态振型。
Natural frequency of the riser will decrease due to the internal fluid flowing and temperature differential.
管内流体流动和管内外温差会降低立管的固有频率。
Experimental results indicated that the amplitude response changed obviously close-by the natural frequency.
实验表明，在固有频率附近幅值响应有明显的变化。
A finite element method for analyzing vibration mode and natural frequency of tire construction was provided.
提供了一种分析轮胎结构的固有振型和频率的有限元方法。
The results showed that the mount spacing can be varied to adjust the natural frequency of the rotational mode.
结果说明：改变隔振元件的间距能调整扭转振动的固有频率的大小。
A finite element method is presented for the calculating natural frequency of turbogenerator stator end windings.
本文提出一种计算汽轮发电机定子绕组端部振动固有频率的有限元方法。
Air springs have characteristics of variable stiffness, and their natural frequency are much lower than leaf springs.
空气弹簧具有变刚度特性，其振动频率要比钢板弹簧低得多。
The results show that the fatigue crack not only decreases the natural frequency, but also causes non linear vibration.
计算结果表明，疲劳裂纹不仅使悬臂梁的固有频率下降，而且引起非线性强迫振动响应。
This paper introduces the micro magnetometer and analyses the natural frequency and driving voltage of the sensor as well.
文中介绍了基于这一原理的微型磁强计，对传感器的固有频率和驱动电压进行了分析和计算。
Utilizing ANSYS, the static deformation and natural frequency for the spindle of the nc boring-milling machine are analyzed.
利用有限元分析软件ANSYS计算数控镗铣钻床主轴的静态变形与一阶固有频率。
The paper puts forward a convenient and efficient method on the analysis of vibration natural frequency for ring ultrasonic wave motor stator.
本文提出了一种用于分析环形超声波电动机定子振动固有频率的简便、有效的方法。
The measurement accuracy and work efficiency are greatly improved by turbine blade natural frequency measurement system based on industrial PC.
基于PC机的汽轮机叶片静态频率测量系统可大大提高测量的精确度和工作效率。
The natural frequency is a critical parameter of structure vibration; it is the foundation to investigate the dynamic response of composite beam.
而结构动力特性中的自振频率是反映结构自身特点的重要参数，是研究组合梁动力学问题的基础。
The figures of the characteristic curves of the natural frequency are plotted based on the characteristic relationships of the natural frequency.
根据非线性固有频率的特征关系式画出了非线性固有频率的特征曲线。
Natural frequency and response vibration amplitude character of contact system will directly influence the reliability of EMR's mechanical contact.
其接触系统的固有频率与响应振幅特性直接影响电磁继电器的接触可靠性。
Then a new type of structural optimization is proposed by employing one of the main indexes of structural dynamic characters i. e. natural frequency.
在此基础上，引入结构动特性的主要指标之一的结构固有频率，提出了一种新的结构优化形式。
The system structure distortion under gravity environment, and the dynamic characteristics such as natural frequency and were analyzed and calculated.
分析计算系统在重力环境下的结构变形，以及系统的自然频率及振型等动态特性。
An interval analysis method was proposed for the influence analysis of the model error to the computational results of natural frequency of structures.
给出了一定误差水平下的模型误差对固有频率计算结果影响程度分析的区间方法。
On the base of sensibility analysis, an optimization for tensioner is performed with the lowest sensibility of system natural frequency as the objective.
在灵敏度分析的基础上，以系统固有频率灵敏度最低为目标对张紧机构进行优化。
The influence of flowing velocity, pressure, solid_liquid coupling damp and solid_liquid coupling stiffness on natural frequency are discussed respectively.
讨论了流体的流速、压强变化以及固—液耦合阻尼和固—液耦合刚度对管道固有频率的影响；
The influence of flowing velocity, pressure, solid_liquid coupling damp and solid_liquid coupling stiffness on natural frequency are discussed respectively.
讨论了流体的流速、压强变化以及固—液耦合阻尼和固—液耦合刚度对管道固有频率的影响；
应用推荐