velocity variation

Precise Measurement of Seismic Velocity and Velocity Variation by Correlated Detection

利用相关检测法进行地震波速及其变化的精确测量

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This technique an well cope with vertical or lateral velocity variation in medium and reduce interlayer reverberation incurred from computation because it uses two-way nonreflecting wave equation to compute seismic wave field in reverse time direction.

该方法从双程无反射波动方程出发，沿反时方向进行波场计算，使混合法偏移能够适应纵横向速度变化，并能有效地减弱计算中产生的层间混响。

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During the process of laminar flow, the variation of thermal field and velocity field may occur in the lower crustal flow channel.

在下地壳层流过程中，地温场和速度场发生变化。

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Observation and Study of Wind Velocity Variation with Altitude over the EXPO Land, Shanghai

上海世博园上空边界层风垂直变化观测研究

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The average friction coefficients present a similar variation with normal load and sliding velocity for the two nitrided layers during the dry sliding in vacuum.

在真空干滑动时两种渗氮层的平均摩擦系数随法向载荷和滑动速度的变化趋势相似。

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The velocity distributing, variation of extension rate, shear rate and the natural convergence angle of the fluid were analyzed under different initial entry pressure.

分析了在不同口模压力（P）下入口区速度分布、延伸应变速率、剪切应变速率以及流体自然收敛角的变化。

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Electro-hydraulic servomechanism compensating based on velocity variation caused by torque disturbance

基于扰动转动力矩速度补偿的电液伺服机构

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Tide Variation of Earth Rotation Velocity Change

地球自转速率的潮汐变化

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Results show that the effect of charge weight variation on the muzzle velocity probable error is not significant when the variation is within normal range.

结果表明，装药量在其正常范围内波动时，装药量的变化对初速或然误差的影响并不显著。

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Objective It is to investigate the variation of cerebral artery velocity ( FV ) after severe head injury.

目的研究重型脑外伤后 脑血管 血流速的变化及对预后的影响.

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Experimental results indicate that the variation of ambient pressure not only significantly affects the spray tip penetration and the velocity characteristics of spray field, but also affects the droplet size obviously.

结果表明：环境压力的变化不仅可以明显改变喷雾体积大小和喷雾场的速度特性，同时对粒径特征也有显著影响。

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VVA ( Velocity Variation with Azimuth) is stable but only can identity a large suite of reservoir and has inaccurate resolution for identifying thin reservoir.

速度随方位角变化法（VVA）比较稳定，但只能识别大套储层，对于识别薄储层的分辨率不够。

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This paper focuses on the optimization design of curved stem cranking bar mechanism used single variation parameter ( auxiliary angle) based on the optimum drive angle and maximum itinerary velocity variation coefficient. The method is practical, feasible and can help improve the quality of mechanism design.

利用单变参数（辅助角）按最佳传动角及最大行程速度变化系数对曲柄摇杆机构进行优化设计，提高了机构设计质量，方法实用可行。

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A theoretical formula for particle velocity variation along shaped charge jets was derived based on the energy conservation of jet stretching.

从射流拉伸过程的能量关系出发，导出了相邻颗粒间速度差的理论公式。

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