固有振动

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。

It is a simple and convenient method in order to compute the natural frequency of a more complicated vibrational system.

能量法是从机械能守恒定律出发，对于计算较复杂的振动系统的固有频率来得更为简便的一种方法。

The analogue results obtained from the water turbine in Gezhouba have been used by the author in his evaluation of the vibration characteristic of turbine blade and a nomographic chart indicating the relationshi...

作者将葛洲坝水轮机叶片模态分析结果，应用到叶片振动特性的估价中，绘制了转速及其派生的频率，卡曼涡频率与叶片固有频率关系的诺模图，可供设计参考。

The finite element model of the free vibration for the rigid suspension catenary and pantograph is set up.

建立刚性悬挂接触网的自由振动有限元模型，计算其固有频率和振型。

Using this theoretical formula, we estimated the inherent frequency of penstock system in Three Gorges hydropower station.

利用此理论公式，估计了三峡电厂引水系统的实际固有频率，所得结果与实测值比较接近，从理论上证实了水体共振引发异常振动的可能性。

It includes the undertermined fundamental frequency approaching zero and the collision of the periodic orbit with the saddle point.

然后分别依据系统的待定固有频率趋于零和周期轨道趋近于鞍点两条途径获得了强非线性振动条件下系统同宿分岔的解析判据。

The finite element models of two types of machine guns are set up, mainly based on the 3-dimensional beam elements, partly based on boundary elements. Modal experiment plan of the machine guns is designed and their modal analysis experiments are done. The inherent properties of structural vibration and dynamic response properties for type-02 14.5 mm anti-aircraft machine gun and type-89 12.7mm machine guns are completely realized through the method combining theory and experiment, and many valuable conclusions are obtained.

建立了以三维梁单元为主，边界元为辅的高射机枪和重机枪有限元模型，设计了模态试验方案并进行了两支枪的试验模态分析，采用理论与实验相结合的分析方法，全面揭示了 02 式 14.5mm 单管高射机枪和 89 式 12.7mm 重机枪的结构振动固有特性和动力响应特性，获得了许多有价值的结论。

Be spreading the feeling machine discharge tube vibration within outer shell containits proper frequency.

在传感器外壳中的流量管振动有它的固有频率。

That is a random signal and vibration analysis system,the parameters and modal shape s are acquired.

3的模态测试分析功能对该柴油机机体进行了模态测试，得到了机体结构的前5阶固有频率及相应振型，可看出机体各部分振动的特征，据此为发动机结构改进设计提供了试验依据。

According to vibration theory, for many degrees of freedom systems, the flexibility matrix is obtained by reciprocal relations between flexibility matrix and stiffness matrix.

柔度矩阵元素反比于固有频率的平方，即低阶振动的模态和频率信息在柔度矩阵中所占的影响成分很大。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷