查询词典 wave velocity

Based on up_ and down_going wave decomposition and elastic wave power reciprocity theorem, this paper derives, in the lateral velocity varying case, linear prediction operators expression and the generalized spectral factorization equation for reflection dataset.

本文基于上下行波分解及弹性波互易定理，导出横向变速介质条件下线性预测算子的表达式和反射数据的广义谱分解方程。

Various forms of wave equations, definitions of wave number and frequency, derivations of phase speed and group velocity, and a quick discussion on dispersion relationships.

各种形式的波动方程，波数和频率的定义，相速度和群速度的引入，以及一个关於色散关系的小讨论。

sound velocity ; temperature ; stationary wave method ; ultrasonic wave

虽然用超声波测声速具有以上优势，但实验数据的精确度在一定程度上受到超声波信号发生器的稳定性、压电陶瓷换能器的效率、周围环境温度等因素的影响。

There exist some problems in subsalt seismic exploration of Caspian seashore basin, such as salt doom screening, interference wave development, weak energy of reflected wave, shortage of prior data and pseudo-structures caused by velocity anomaly, etc.

哈萨克斯坦滨里海盆地盐下地震勘探存在盐丘屏蔽、干扰波发育、反射波能量弱、先验资料缺乏以及因速度异常引起的构造假象等问题。

At the circumstance of low speed of flow, the standing wave resonances of protruding and trap cylindrical cavities are also studied. The distribution of sound particle velocity and pressure of the standing wave in cavity are analysed.

还进行了陷落式和突出式两种圆柱形腔驻波共振的研究，分析了驻波共振的声场分布，其频率公式与实验值符合很好。

An S-wave arrival time detection method for wave velocity measurement in single-hole method is presented in this paper.

本文系统论述了单孔法剪切波速测量信号处理中的一种到时差识别方法。

High-quality antral slow-wave recordings were achieved in the intraoperative human trial (amplitude, 0.41 +/- 0.04 mV; SNR, 12.6 dB), and an activation map was constructed showing normal aboral slow-wave propagation at a velocity of 6.3 +/- 0.9 mm/s.

在腹腔镜胆囊切除术中测量试验中，我们获得了高质量的胃窦部慢波电位记录结果（振幅0.41±0.04mV，SNR 12.6分贝），并且显示出正常慢波的离口传播速度为6.3±0.9mm/s。

The studies on the compositions, origins and elastic properties of the southern Tibetan lower crust include the following 4 aspects: the petrological and geochemical festures and ages of granulitic facie rocks located in Higher Himalayas; dehydration melting experiments on the biotite-plagioclase gniess collected from Higher Himalayas at high temperature and high pressure to model the formation of the granulites; measurements of wave velocities of the lower crustal rock in situ; analysis of origin of intracrust low wave velocity layers beneath southern Tibet.

以西藏南部下地壳物质组成，成因及其弹性性质为研究目标进行了4个方面的相关研究：高喜马拉雅地区麻粒岩相岩石的岩石学，地球化学和年代学研究；麻粒岩相岩石成因的高温高压实验；原位条件下岩石的弹性波速测量；西藏高原壳内低速层的成因分析与模拟。

The inial optimizing value is chosed according to Rayleigh wave with dominant energy in the Lamb's problem and the difficulty of calculating the velocity of Rayleigh wave of transversely isotropic saturated soils is solved.

分析表明：瑞利波速在饱和均质半空间具有弥散性，各向异性参数ζ〓、ζ〓对瑞利波速有明显影响，ζ〓在特征频率附近对瑞利波速的影响较大，在高低频区段对瑞利波的影响较小。

On the basis of analyzing the basis geologic characteristics of oolitic beach reservoir, proposed is a method for this reservoir lithology identification using conventional P-wave/S-wave velocity ratio and electric imaging log data.

在对鲕滩储层基本地质特征进行分析的基础上，提出了应用纵横波速度比和电成像资料结合的方法对鲕滩储层岩性进行识别。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。