查询词典 velocity

The speckle velocity equal to the nano-particle velocity in the fresnel diffraction field is proved in theory.

根据这个结论，利用高速CCD拍摄散斑图，并进行图像处理获得与散斑运动速度相关的信息就可以得到纳米颗粒的运动速度。

Based on the explanation, to analyze the relation of freezing velocity and frost heaving ratio, we can conclude that the frost-heaving ratio diminishes exponentially with the freezing velocity increasing.

并在此基础上分析了冻结速率和冻胀率之间的关系，得出了土体的冻胀率随冻结速率增大呈幂指数形式递减。

The results show that whether the stiffness profiles are smoothly varying or layered, the fundamental mode dominates the surface wave field and the effective phase velocity approaches to the phase velocity of the mode in far field for the regular profiles. For the irregular profiles, the higher modes have a significant influence on the surface wave field. The intensity and the frequency range of the influence are related to variation of the profile stiffness.

结果显示，无论剖面刚度是缓变还是分层变化，对规则剖面，表面波场基阶模态占主导地位，远场表面波有效相速度与基阶模态相速度接近；对不规则剖面，表面波场中高阶模态影响较大，影响程度及频率范围与剖面刚度变化有关。

The results indicate that there are four factors, such as gaseous phase space velocity, liquid phase space velocity, temperature and time, which have influence over the process of coking.

为此，在进行理论分析和预实验的基础上，进行了正交实验，结果表明，除时间外，气空速、液空速和温度也是影响非催化结焦的主要因素。

For further criterion on the nature of the high-velocity surface-acoustic mode isPSAW or the high-velocity surface-head wave(or longitudinal-wave head wave)wedevelop,the established generalized Green's function theory for the surfaceexcitation The precise expression and its numerical results of Green's function forPSAW is presented,as the contribution of complex pole.

为了判定高速表面波动模式是伪表面波还是头波，对压电晶体半空间的普遍Green函数理论作了一些补充和深入的分析。

This thesis is combined with the project－"design and exploitation of Automotive Constant Drive-Shaft", which is undertaken by the topic team. Based on the structural simplification to three-dimension solid models of ball-cage type and three column-shaft type constant velocity joint, and the three-dimension solid models are obtained by conversion engineering. Altair/Hpermesh software is used here for generating the finite element mesh of key parts of ball-cage type and three column-shaft type constant velocity joint.

本文结合课题组承担的"汽车等速驱动轴设计开发"项目，在对通过逆向工程方法获得的等速驱动轴的球笼式等速万向节和三枢轴式等速万向节三维实体模型进行结构简化的基础上，利用Altair/Hypermesh软件对球笼式和三枢轴式等速万向节的各关键零件进行了有限元网格划分。

Phase velocity and group velocity are important characteristics of elastic wave propagation.

相速度、群速度是弹性波传播的重要特征。

And this phenomenon originates in the difference between the group velocity and the phase velocity in UPHGB.

并用脉冲光束的群-相速度差对这一现象进行了解释。

Group velocity: The velocity with which the energy in a wave train travels.

一组波列中能量的传播速度。

The guided wave group velocity was calculated according to the experiment result, and the location of damage was estimated with the group velocity and time of flight.

通过对实验结果的处理分析，计算出导波的群速度，并根据群速度和飞行时间得到了损伤的位置信息。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。