您要查找的是不是：
- 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。
- 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。
- The lower the natural frequency of the FST is, the better the performance of vibration isolation is. 浮置板系统的固有频率越低，隔振性能越好。
- The results indicate that the natural frequency of vibration of multispan stone arch bridge is closely packed and it has adequate safety allowance. 研究结果表明，多跨度石拱桥作为一个整体，其自振频率较为密集，桥梁具有足够的安全裕量。
- Both increasing the mass and reducing the support stiffness of the slab can reduce the natural frequency of the FST system to achieve better performance of vibration isolation. 可以通过增加浮置板质量和降低浮置板支承刚度的方法降低浮置板轨道系统的固有频率，以达到较好的隔振性能。
- Through the swept frequency experiment study for a kind of CD-ROM,the damp ratio of vibration system and natural frequency of vertical vibration model are obtained. 通过对某型号CD光驱的隔振系统作扫频实验,获得振动系统的阻尼比和竖直振型对应的固有频率。
- SA (spectral acceleration) is approximately what is experienced by a building, as modeled by a particle on a massless vertical rod having the same natural frequency of vibration as the building. 而谱加速度大致上是一座建筑物感受到的加速度，科学家把一颗与目标建筑物具有相同自然频率的粒子放在一个近似无质量的垂直控制棒上进行模拟得出此数据。
- a vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating system. 一个相对来说比较小的、其周期等于或接近于该系统固有振动周期的周期性刺激所引起的大振幅的振动。
- natural frequency of vibration 自振频率
- An approach has been made upon problems of tuning natural frequency of variable stiffness elastic support of 3D vibration strengthening polishing vibration table. 对三维强化、抛光振动台变刚度弹性支承调谐固频的问题进行了探讨。
- The former causes forced vibration at the circular frequency of the crank shaft and the latter causes transient vibration at the natural frequency of the press. 惯性力激发的振动是以曲轴转速为频率的强迫振动，加工力激发的是以压机固有频率为频率的过渡振动。
- The dominant blast vibration frequency affects the evaluation of slope stability under the condition of blast vibration via its being close to the natural frequency of slope. 爆破振动主频就是通过对边坡自振频率的接近程度来影响其对边坡的稳定性评价,故求得边坡自振频率具有十分重要的意义。
- 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。
- We calculated the natural frequencies and mode of vibration for a five stepped Si-beam of Si-piezoresistive accelerometer. 我们用该方法计算了硅压阻式加速度传感器五阶梯硅梁固频和振型。
- The test result shows tha the influence of related displacement on surface finish is linear and related to amplitude and frequency of vibration and spindle speed. 试验结果表明：相对位移对表面光洁度的影响是线性”的，不仅与振动幅值有关而且与振动频率及主轴转速有关。
- The hysteresis loops, response of vibration, transmissibility and resonant frequency of dampers with different thickness are obtained respectively. 获得了钢板厚度不同时隔振器的弹性迟滞回线、隔振器系统频响特性、传递率及固有频率。
- By analysing some different types of isolating configurations, the relations between the natural frequency of rotational vibration and that of the linear vibration have been found. 通过对几种不同的隔振形式的分析，得到了扭转振动的固有频率与线性振动的固有频率之间的关系。
- natural frequence of vibration 自振频率
