查询词典 type A wave

The structure beam response control method based on the traveling wave model was discussed theoretically. The theoretical traveling wave model was applied to a long thin beam with piezocrystal actuators and the traveling wave active control law for the condition of making measurement upstream and performing control downstream was derived and the control compensator formula of the flexural waveguide in the form of transcendental function was deduced.

从理论上探讨了基于行波模型的结构梁响应控制方法，在梁及压电陶瓷作动器处采用行波理论模型，导出了上游测量、下游点施加控制的行波主动控制律及相应的具有超越函数形式的控制补偿器表达式。

Regarding with transverse wave, it includes shear wave and electromagnetic wave.

上述的纵波包括Biot (1962)理论的快波和慢波，而横波包括力学剪力波和电磁波。

The transverse wave is the wave in which the particles, vibration is perpendicular to the wave′s direction of travel.

横波是质点振动方向与波的传播方向相垂直的波，其外形特征是交替出现凸起的波峰和凹下的波谷。

In the regular wave experiment, the transverse error of wave height is less than 2%, the repeated error of the wave height is less than 1.28%and the period repeated error is less than 0.2%.

介绍了实验室的造波机系统和造波特性及其在模型试验中的应用，并讨论了实验室内模拟海浪的检验标准及其方法。

By means of the undetermined coefficient method ,which is submitted in reference for solving nonlinear wave equations for their peaked soliton solutions ,three kinds of peaked soliton solutions are obtained for two important nonlinear wave equations— Korteweg-de Vries equation and Benjamin-Bona-Mahonyequation,respectively. One kind of peaked compacton solution ,which has the characteristics of both peaked soliton solution and compacton solution ,is obtained for above two equations with the aid of transformation relation between triangle function and hyperbolic function,. By use of above solutions, two kinds of periodic peaked traveling wave solutions are constructed.

摘 要：利用文献中提出的求非线性波方程尖峰孤子解的方法，分别求解了两个重要的非线性波方程—Korteweg-de Vries 方程和Benjamin-Bona-Mahony BBM）方程，得到了3类尖峰孤子解；借助双曲函数与三角函数间的变换关系得到了1类尖峰紧孤子解，该型解兼有尖峰孤子解和紧孤子解的特点；在上述结果的基础上构造了2个周期性的尖峰行波解。

The variation of horizontal and uplift forces acting on the unit length of breakwater with attack angle is presented, and the effects of multi-directionality, wave steepness, and relative wave height on wave forces are discussed.

通过试验结果分析，给出了作用在直立堤上的单位堤长波浪力随波向角的变化规律，讨论了波浪方向分布宽度、波陡及相对波高等因素对单位堤长波浪力的影响。

TEM field is slowly changing in middle to deep depth prospecting, which is characterized by unperceivable wave and dominant dissemination, thus it can be assumed to be quasi-static state approximate and the wave equation of electromagnetic wave radiation is retrogressive and replaced by diffusion equation.

在中、深层勘探情况下，TEM场是缓变的，其波动性已经很不明显，扩散特征起支配作用，波动方程退化成了扩散方程。

The thesis discusses three eigenvalues individually and explains the pressure wave propagation of three modes, includes wave speed, wave decay and energy distribution. Since the elastic potential energy occupies more than 98% of mechanical energy in the arteries, which is larger than 2% of kinetic energy of flowing blood. Else join elastic wall and wall of managing having a viscid condition to analysis .

本文将个别讨论此三组特徵值，来说明三组压力波的传递模态，其中包括波速，以及波的衰减；由於在动脉的能量分布中，由管壁振动的弹性位能占了98%，远超过血液本身流动的2%，再加上管的弹性模数和管壁的黏滞性再来讨论此三组模态，个别在弹性管的能量分布。

The results of computation show that this method is very effective for reducing and controlling the transverse oscillation of wave motion and for the calculation of wave particle velocity of wave motion on free surface, w...

计算表明：这种0—1混合型边界元的剖分方式，在控制和减缓波浪"横向振动"幅度及水面单元水质点波动速度的计算方面，显示出了其独到的优越和灵活之处，为时域内的波浪非线性变形计算提供了时步上的数值保证

When using full wave train logging data to make C wave synthetic seismogram,it needs to consider the influence of many kinds of factors such as dip and anisotropy of bed as well as environment correction of S wave logging data etc.

采用全波列测井资料制作转换波人工合成地震记录，需要考虑地层倾角、岩层各向异性、横波测井资料的环境校正等多种因素的影响；在纵、横波资料对比中，又需要考虑极性、井资料的深时转换、子波带宽等的影响。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。