查询词典 undamped wave

Measuring sound velocity in the air using stationary wave method is discussed in this paper,phase comparison method and Lissajous figure method both could determine the wave length of ultrasonic wave.

1引言在大学物理实验教学中，测量空气中的声速用传统的共鸣管方法和超声波方法。

The "NVIS"(Near-Vertical Incidence Sky wave) antenna is set on the horizon, which can clear up the dead zone of short-wave communication, and a ferrite loading spiral coil antenna is installed on the rocker projectile to receive the short wave signal.

在地面设置近垂直入射天波传播"NVIS"天线，消除短波通信静区，弹上安装铁氧体加载螺旋线圈天线接收短波信号，利用原有弹载计算机进行数据处理。

Again we call the faster wave the longitudinal and the slower wave the shear shock wave.

我们还是把较快的波叫做纵冲击波，而把较慢的波叫做剪切冲击波。

Also call P-wave, dilatational wave, and longitudinal wave.

也称为 P-波，膨胀波和纵波。

We know that a transverse wave will cause particles to vibrate perpendicular to the direction of the wave, and a longitudinal wave will cause them to vibrate along it.

我们知道一横波会令周遭粒子沿波的垂直方向振动，而纵波则会令它们沿波的方向振动。

First, experimental datum is analyzed and it is found that the shallow water ocean internal wave spectrum is different from that of the deep ocean GM spectrum. Then, the theory of weak turbulence is systematically summarized, and Lvov and Tabak's method of obtaining the deep ocean internal wave spectrum is introduced. They applied the theory of weak turbulence to internal waves of long wave length and found that GM spectrum maybe obtained theoretically.

首先，基于海洋实验数据分析了浅海内波谱特性，指出它与深海GM谱不同；接着，系统地总结了Zakharov等人发展的基于波-波相互作用的弱湍流理论，对文献中没有给出推导的一些关键性公式进行了细致的推导，并讨论了Kolmogorov-Zakharov谱在海洋内波研究方面可能的应用；最后，总结了Lvov和Tabak对于深海GM谱的弱湍流理论解释；介绍并细致推导了Madja、Mclaughlin和Tabak(1997)提出的一维MMT模型及其特性。

We discuss the mechanism of wave beam forming for the phase array vibrators, give a definition of the marginal energy density for the seismic wave field, and make some quantitative analyses to the energy intensity along each direction on the snapshot of the wave field.

本文讨论这种相控阵震源的波束形成机制。引入了地震波场的边际能量密度的概念，利用地震波场的时间切片技术，对模型空间各个方向上的能量强度进行了定量分析。

From the perspective of matter wave in quantum mechanics, this paper, by describing the wave function of microcosmic particle and using probability wave, derives the distributive regularity of light intensity of the single slit diffraction and circular aperture diffraction.

光具有波粒二象性，从量子力学的物质波出发，利用描述微观粒子的波函数，采用几率波的方法，导出光的单缝衍射和圆孔衍射的光强分布规律，所得结果与波动光学中用惠更新－菲涅耳原理得到的结果一致。

The above multiple changes will produce 2 kinds of waves, Matter waves and mechanical waves that spread at the same time. Because the electromagnetic wave is a matter wave, it is the medium. Since the multiple exchanges of the electrons state can be regarded as electrical vibration, and the vibrated electrons have magnetic fields and electrical fields at the same time, the electromagnetic wave will be produced. Then, because the electron itself is a matter micro particle, it can produce mechanical waves which can propagate outside with electrical magnetic waves.

这种状态改变的多次往复，就会产生两种波，一种物质波，即电磁波；一种机械波，并且这种机械波是以同次产生的电磁波为媒质进行传播的，，这是因为本种状态的多次往复，可以看作是一种电子振动，振动的电子同时具有磁场和电场，所以能够产生电磁波，又因为电子本身是一个物质微粒所以他能够产生机械波，并且是横波，并随电磁波进行向外传播。

Week 5 Energy of mechanical wave, Huygence principle, supposition principle of wave, wave interference.

第5周 机械波的能量。惠更斯原理；波的叠加原理；波的干涉。

He studied their excrement for evidence of livestock hair.

他为家畜毛的证据研究他们的粪便。

Loneliness is not grounds for deportation, deportation of the people are not all lonely people.

寂寞也不是放逐的理由，放逐的人也并不都是孤独的人。