振动的

In the experiment, an accelerater is used as sensor to pick up the vibration signal of aerofoil, loudspeakers are used as vibration control sources, the aerodynamic load on the aerofoil is produced by the coupling of sound and vortex.

实验中采用加速度计作为传感器，拾取机翼振动的信号，用扬声器作为振动控制源，通过声—涡的耦合来产生作用在机翼上的气动载荷。

A damage identification method based on axial vibration was presented on the basis of theoretical derivation axial vibration differential equation and analytical solution of three kinds of support form.

在理论上推导悬臂梁轴向振动微分方程及其3 种支座形式的解析解的基础上，提出了一种基于轴向振动的结构损伤识别方法。

Many results have been gain about the equation's oscillation, asymptotic behavior and stability, etc.

此外，在讨论方程的振动性的时候，我们分三种情形得到了方程振动的充分性判据。

Based on Chen's model about axial flow induced vibration of a rod bundle in an unbounded domain, a mathematical model concemed with circular domain is presented, and the expressions for fluid forces are given in detail.

三、基于Chen关于无界域轴向流动中棒束流致振动的模型，推导了有界域棒束轴向流致振动的数学模型，得到了关于流体力的表达式。

In light of the fact that the vertical vibration acceleration is on the high side on the loaded double-deck container flat car , on the basis of the test results from operation on track, the causes to the acceleration being on the high side are analyzed from the angle of resilient vibration of the cars.

针对双层集装箱平车重车垂向振动加速度值偏大的实际情况，根据线路运行测试结果，从车辆弹性振动的角度分析了加速度值偏大的原

This paper discusses the mechanism of the propagation of elastic surface wave,presented a method that use the tip of atomic force microscopy and beam deflexion method to on line detect the nanometer vibration of the particle in the surface wave.

本文探讨了表面弹性波传播的机制，提出了一种利用原子力显微镜微探针与光束偏转法检测纳米振动的新方法，并利用这种方法对表面波质点的纳米振动进行了实时检测。

Some necessary and sufficient conditions for the oscillation of solutions of delay hyperbolic differential equation s are obtained.

建立了一类时滞双曲型微分方程解的振动充要条件，揭示了这类双曲方程与相应泛函微分方程解的振动的等价性。

In mechanical vibration, when the natural frequency of plan dynamic frequency and system is consistent, the amplitude of forced vibration reachs great value.

在机械振动中，当策动力的频率和系统的固有频率一致时，受迫振动的振幅达到极大值。

Axisymmetric nonlinear free vibrations of bimetallic shallow shells of revolution with uniformly distributed stationary temperature changes are investigated using the energy variational method and the homotopic perturbation method.

数值结果表明，变温对双层扁壳非线性振动的频率有明显的影响，而扁壳矢高可以改变振动的弹簧特性。

For the aim, it is need to find the law of lateral vibration.

为了更好的实现横向振动的控制，就需要深入了解锯片横向振动的机理。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。