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- natural frequency method 自振频率法
- To alleviate the vibration of ethylene compressor in outlet pipelines,the natural frequency was analyzed and calculated by finite element method. 为减轻乙烯压缩机出口管线的振动,采用有限元方法建立管线模型,对管线结构固有频率进行分析计算。
- This paper presents a method used for calculating the natural frequency of gases subjected by small pressure pulsations in pipe systems. 本文介绍一种用以计算微压扰动下管道中气柱自振频率的方法。
- Secondly, it establishes the dynamic model of the aerostatic bearing-spindle system, using the finite element method to obtain the natural frequency and mode shape. 其次，建立气体静压轴承-主轴系统动力学模型，以有限元素法求解其自然频率、振型。
- 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。
- 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。
- The natural frequency of specimen decreases as the crack length increases. 随着裂纹长度的增加，试样的固有频率逐渐减小。
- This paper introduces the principle and tested results of measuring nodulizing grade by audio frequency method. 介绍了音频法检测铸件球化级别的原理及试验结果。
- Frequency method and Bayesian method are the two main data mining algorithms used in pharmacovigilance nowadays. 目前各国普遍使用的数据挖掘方法主要有频数法与贝叶斯法。
- The application of adaptive vibratory cutting was brought forward innovatively based on resonance theory, and a method of on-line measuring natural frequency of soil was also put forward. 以共振理论为依据,为实现自适应振动掘削,提出一种在线测量土壤固有频率的方法。
- In the reasonable prasonable hypothesis condition, this paper establishes a vibration model of gripper bars and chain pitches,and gets its natural frequency by using the changed QR method. 本文在合理的假设条件下,建立了牙排、链节的振动模型,并用变形QR法求出牙排、链节振动的固有频率。
- Abstract : The two frequency method for measurring corrosion reaction resistance based on a. c. impedance and numerical integration has been proposed. 摘要 ： 提出了基于交流阻抗和数值积分原理的二点频率法。
- The differential quadrature method(DQM)is extended to solve the natural frequencies of pipe. 采用微分求积法求解输流管道的固有频率。
- The results show that anomaly frequency method is effective for the analysis of high frequency information characteristics in digital subsurface fluid data. 结果表明，异常频次法是地下流体数字化资料高频信息特征分析及其应用的有效方法。
- Equation (4-198) yields a first approximation for the change in the natural frequency of vibration. 方程（4－198）给出了一级近似下的固有振动频率的改变量。
- Based on the clump intensity index, regressive analysis method and zero frequency method, the spatial distribution pattern of Latori bicolor (Walker) larvae was studied. 应用聚集度指标法、回归分析法、零频率方法对两色绿刺蛾幼虫在毛竹林间的分布型进行测定。
- The swing is a pendulum with a single natural frequency depending on its length. 秋千是只有一个固有频率的摆，此频率决定于它的长度。
- In this paper,the natural frequencies and modes of box water body researched by using three-dimensional finite element method. 本文运用三维有限元方法离散水体，研究了箱形术体的自振频率及动水压力振型。
- Equation(4-198)yields a first approximation for the change in the natural frequency of vibration. 方程(4-198)给出了一级近似下的固有振动频率的改变量。
- Method The natural frequencies of the hypergravitation training facility were modified by using sensitivity analysis method. 方法采用灵敏度分析法对超重训练设备的固有频率进行修改设计。
