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The wave velocities of sandstone samples within ultrasonic frequency band are explained by pore fluid local flow and elastic wave scattering mechanism.

同时测量了超声波频段速度和频率的关系，指出在25KHz-1.2MHz的频率范围内存在一个速度的峰值，局部流机制和弹性散射机制对速度频散同时起作用。

The discharge mechanism of the avalanche in these gases has been analyzed. The variation patterns and impact factors of their effective ionization coefficients, electron drift velocities and diffusion coefficients have been given. The transportation of electrons is closely related to that of ions.

为验证模拟结果的正确性，本文采用PT法获得的SF〓／N〓、SF〓／CO〓和SF〓／Kr的实验结果和模拟结果进行对比，分析了它们的电子崩发展特点，给出了其有效电离系数、电子漂移速度和扩散系数的变化规律以及影响因素。

Grain size trends show sediment transport towards the central sandbank within the embayment and the seaward end of the deep channel at the entrance. Such patterns are highly consistent with the characteristics of current velocities and geomorphology; they are also in good agreement with heavy mineral movement and spatial distribution patterns of calcareous nannofossils.

沉积物粒径趋势结果显示，胶州湾内的大型垄脊和口门延伸至外海的深槽尾部是两个主要的沉积物汇聚区，这不仅与地貌及水动力相吻合，还与根据重矿物扩散趋势一致；与颗石藻化石空间分布型式亦有一定的相关性。

Test and analysis show that, the distribution patterns of the tangent veloctiy fields in the big cone area and the small cone area, which are comprised of para-free vortex and para-forced vortex, are basically identical without a change of the radius of the boundary surface; with the increase of the angle of the small cone, the para-free vortex area decreases and the para-forced vortex area increases, and the emulsifiability of the fluid drips increases with the increase of velocity gradient; the tangent velocity increases with the increase of inlet flow, and the maximum tangent velocities of both the big cone area and the small cone area are 4.94 times of the inlet flow; and the maximum tangent velocity increases with the increase of the split ratio and with the radius of the boundary surface not changed.

试验分析表明，大锥段和小锥段切向速度分布规律基本相同，均由准自由涡和准强制涡构成，分界面半径rm没有变化；随着小锥角θ的增加，准自由涡区缩小，准强制涡区扩大，速度梯度增加会加大液滴的乳化程度；随入口流量增加，切向速度增大，经拟合得出大锥段和小锥段的最大切向速度均为入口流量的4.94倍；分流比加大，分界面半径基本不变，最大切向速度增加。

For a heterogeneous elastic solid consisting of two homogeneous layers, three homogeneous layers whose shear wave velocities increasing with depth, or three homogeneous layers whose interlayer has high velocity, if there are multi-mode dispersion curves, the phase velocity V〓 of the first mode will close up to the Rayleigh wave velocity of the bottom layer when frequency f→OHz, and V〓 of the first mode will close up to the Rayleigh wave velocity of the top layer when f→∞.

由多导波模式的相速度频散曲线还可知，对于二层固体介质、结构层的横波速度随深度而递增的三层固体介质、含硬夹层的三层固体介质而言，若频率f→OHz，其基阶模式的瑞利波相速度V〓→V〓（V〓为最底层介质的瑞利波速度）；若f→∞，其基阶模式的V〓→V〓（V〓为最上层介质的瑞利波速度）；因此，随着频率f逐渐升高，野外实测的瑞利波相速度V〓曲线应该主要为基阶导波模式。

The results of this study, we hope, can provide three different joints in three velocities, from low to high, for coaches to train golf players to make a faster clubhead speed and a farer ball distance to gain the best performance in the international competition.

从本研究的结果，期望能够给予教练了解对於腕关节、肘关节和肩关节在不同速度上的差异，以应用於肌力训练上，且提供教学参考的依据和选手们训练的方向，以求在杆头速度上能够更快，球飞行的更远，并期望能在国际上有杰出的表现，缔造更好的佳绩。

The velocities of the starting-up flow and the oscillating flow of the fractional derivative Maxwell fluid are solved.

求解了该流体的启动流和振荡流的速度。

Simulation results show that bubbles induce the circulation of particles in the fluidized bed in which the distribution of particle velocities can be expressed by the Gauss distribution.

计算结果表明床内气泡的形成造成床内颗粒的循环，使得流化床内颗粒具有不同的轴向和径向脉动速度，颗粒分速度分布近似服从高斯分布。

Based on homogeneous approximation, a robust control law is designed, which drives generalized coordinates of the closed loop system to the origin exponentially and generalized velocities to the origin asymptotically.

基于齐次展开的思想，给出了一种鲁棒控制器设计方法，使得闭环系统的广义位置坐标指数镇定，广义速度渐近镇定。

Analytical solutions for displacements of the viscoelatic half-space were obtained using Green's function method for various moving loads,including constant and harmonic point,line and area load.All velocity cases including the subsonic,transonic and supersonic velocities were considered.

首先采用Green函数法求解黏弹性半空间体在各种移动荷载模式作用下的动力响应的解析解，包括恒常和简谐移动点源、线源和面源荷载。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。