查询词典 wave velocity

According to the special requirements for centrifugal pump PIV measurement, a PIV testing platform was established to measure the instantaneous velocity in the double-channel pump with different impeller design, i.e., the double-channel impeller and the two-blade impeller, under different working conditions. The measured absolute velocity fields were transfered to relative velocity fields by specially developed code.

首次用PIV技术对设计工况与非设计工况下双流道叶轮及双叶片叶轮的内部流动分别进行了测量，并自编程序对测量得到的绝对速度场进行处理，得到相对速度分布。

When gas superficial velocity was about equal to liquid superficial velocity,the probability density function of liquid holdup had a twin-peaked,when liquid superficial velocity was constant,one of the peaks would fade out and disa...

在段塞流动中，当气相折算速度和液相折算速度相差不大时，持液率概率密度函数呈双峰分布；当液相折算速度不变时，随着气相折算速度的增大，持液率概率密度函数第2峰值逐渐减小，直至消失而变为单峰分布；利用这一特征可初步确定段塞流动中气、液相流量相对大小。

The results demonstrate that mixing bubble to pure jets makes the profile of water elevation flatting, the velocity distribution of centerline rising and the fluctuation of velocity near surface fluctuating. The fluctuation of the centerline velocity lack of self-preserve and the whole flow field represents the characteristics of anisotropies.

对比纯射流情况，掺气射流中掺气使得射流中线附近的流速增大；对流场紊动量的分析表明，掺气使射流中心处水面的紊动加剧，掺气射流的紊动强度在射流的中垂线上不具有自相似性，射流在流场中表现为各向异性。

Orbital velocity; cosmic velocity; universal gravitation provides centripetal force; the formula of orbital velocity

运行速度、宇宙速度、万有引力提供向心力、卫星运行速度公式。

From dead-end to open-end, surface velocity increases gradually if the filter passage is shorter and surface velocity of both ends is large than that of middle section if the filter passage is longer. Compared with cylindrical filter, the distribution of surface velocity of conical filter is more uniform.

当过滤通道较短时，过滤元件表面速度沿过滤元件轴向逐渐增大；当过滤通道较长时，过滤元件两端的过滤速度比过滤元件中部的大；同圆柱形过滤元件相比，锥形过滤元件过滤速度的分布更为均匀。

A deflection angle of acoustooptical Bragg diffraction on an acoustic-optical medium is modulated by ultrasonic, and on the other hand, surface acoustic wave propagation velocity can be influenced by rotational velocity Ω of SAW medium.

摘 要：声表面波陀螺效应表现为SAW介质旋转角速度Ω对SAW波速的调制作用，以及对布拉格衍射角的调制作用。

On the basis of the dispersion relation, we investigated the properties of nonlinear surface waves. It is shown that there exist backward surface waves, with the phase velocity and group velocity opposite in direction. For transverse electric waves, the nonlinear wave equation is transformed into Bernoulli equation, and the exact solutions of magnetic fields are obtained.

在色散关系的基础上研究了非线性旋磁表面波的频率特性，揭示了该系统能激发后向表面波，其群速度与相速度反向；将反铁磁晶体中TE表面波满足的非线性波动方程变形为伯努利方程，用反函数形式给出了表面波磁场的精确解。

This feature gives a reasonable explanation for the mechanism of CAS. The phase velocity of diffraction fields for uniform plane wave on a circular aperture has been investigated. It is shown that diffraction can result in subluminous phase velocity at certain points of optical field in vacuum.

如果相对论电子能够注入到这一通道内，那么它与激光场间的相移就可能变得非常小，从而能够长时间地保持在加速相中得到极高能量。

Using the data of sound velocity experiments, static high-pressure research and geophysics, the temperature coefficient of enstatite′s compressional wave velocity, thermal and density anomalies in lower mantle are estimated.

在上述的数据分析过程中，还得到了下地幔区钙钛矿型SiO〓相态纵波声速的温度系数，并由此估算出下地幔底部的温度异常幅度为65-137K，〓约为2.8/。

Phase velocity error caused by position error of microtremor observation array is computed under different conditions such as two different dispersive phase velocity models of Rayleigh wave, three kinds of radius, 19 kinds of observation position mode and 6 types of position error.

为研究地脉动观测台阵中观测点之间的定位误差带来的影响，计算了在两种瑞利波频散模型、3种不同的圆周半径以及19种观测位置等多种情况下由6种定位误差引起的瑞利波相速度相对误差，结果表明：由于圆周上观测点数目有限，在不存在定位误差时，相速度误差也是存在的，随观测点位置的不同，相速度相对误差存在差异，其最大值约为最小值的3倍。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。