查询词典 wave velocity

A light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity.

用石英线悬挂的光盘；当遇到前进的声波时它的扭矩可以测量速率。

Thread; when exposed to a progressive sound wave its torque can measure velocity.

用''。'石英'。''线悬挂的光盘；当遇到前进的声波时它的扭矩可以测量速率。

The results indicted that the deformation range by the first pressure wave is proporational with impact velocity.

研究结果表明：泡沫铝试样在不同的冲击速度加载下变形量大小不同，随着冲击速度的增大，试样达到该冲击速度下的最大变形所需的压缩次数（冲击波的反射、透射过程）减少。

Through many experiments, we find tracing without ray method can solve the problem. The method applies the refractional wave's geometric properties, and exports the velocity models.

无射线追踪法层析静校正将首波方法的稳定性和回转波方法的灵活性结合起来，隐式使用折射波的几何特性，并由此导出速度模型，达到不使用显式射线追踪法进行层析重建的目的。

Numerical Simulation and Experimental Investigation on A Thermoacoustic Engine with Tapered Resonance Tube A symmetrical standing-wave thermoacoustic engine with tapered resonance tube has been numerically simulated with liner thermoacoustics. The simulation shows that using tapered resonance tube in thermoacoustic engine could decrease the velocity amplitude and lower the total acoustic power loss in the resonance tube. The experimental results indicate that the harmonic was suppressed effectively by using the tapered resonance tube, and the pressure ratio was improved.

采用锥形谐振管的热声发动机的数值模拟和实验研究利用线性热声理论，对一台采用锥形谐振管的驻波型热声发动机进行了数值模拟，发现采用锥形谐振管可有效降低工质气体的速度振幅，进而减小在谐振管中声功率的损失；与一台在相同频率下工作的采用等直径圆柱谐振管的驻波型热声发动机进行了实验对比，结果表明，在使用锥形管作为谐振管的热声发动机系统中，谐振管中的非线性效应得到了明显的抑制，热声发动机在基频模式下稳定运行，压比增大而加热温度降低。

It start with several plain and rusticity problem, have described the problem about essential of Doppler offect of sound wave, relative velocity between photon, third observer.

先从几个比较浅显、质朴的问题入手，对声多普勒本质、光子间的相对速度问题、第三者问题作了较详尽的探讨和证明。

The results of 3-D nonlinear seismic analysis show that, to arbitrary velocity and input direction of the design travelling wave, the aseismic safety of the joint structure in the top of diaphragm walls is reliable; all of the core and the diaphragm walls wouldn't occur tension rupture or crack; the sand lens in the overburden wouldn't occur liquefaction; the dam wouldn't occur sliding.

三维非线性动力分析表明，在设计地震作用下，无论各种波速及各种入射方向，防渗墙顶连接部位的抗震安全性较高；坝体心墙及防渗墙不会产生拉伸破坏或裂缝；覆盖层砂层透镜体不会液化；坝体不会出现滑移破坏。

The process of shock acted on a vibration and shock isolation system with double-stiffness was divided into two steps. In the shock action phase of a half sine wave, the response was calculated by using a double DOF model. In the free vibration phase, the response was calculated by adopting a single DOF system, the initial displacement and velocity of single DOF adopt the final value of the first phase.

将环境对双模量隔冲减振器的冲击分为两个阶段，在半正弦波冲击作用阶段采用双自由度模型进行响应计算，并以终了时刻的位移和速度作为自由振动阶段的初始条件，对自由振动阶段的单自由度模型进行响应计算。

This paper shows a new wave of non sinusoidal oscillation of mold new trapezoid and the establishment of its equations of velocity.

提出了一种新的结晶器非正弦振动波形新梯形波，并建立了该振动波形的速度表达式。

Velocity (- 100 Pa s - 1), and the sources of stationary wave energy SC , SB , and SA in units of

位： - 100 Pa s - 1 ；大气定常波源SC；大气定常波源SB ；大气定常波源SA。

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％。