查询词典 velocity

The extracted P-wave is reverse-time extrapolated and imaged with a P-velocity model using a finite difference solution of the scalar wave equation, the extracted S-wave is reverse-time extrapolated and imaged similarly, but with an S-velocity model, and converted S-wave data requires a polarity correction prior to migration to ensure constructive interference between data from adjacent source.

在模型中，每个网格点的纵、横波成像时间，为震源到该网格点的纵波初至时间。利用纵波速度模型和声波传播方程的有限差分解，对反射纵波进行逆时延拓和成像，利用横波速度模型和声波传播方程的有限差分解，对转换横波进行逆时延拓和成像，并在偏移前进行极性校正。

In these boundaries, the contravariant velocity components normal to the boundary are constrained by mass conservation, and for other velocity components and turbulent quantities, the second derivatives are set to zero.

在这些界限， contravariant速度组分正常对界限由许多保护压抑，并且为其他速度组分和动荡数量，第二种衍生物调整到零。

In the present ap-proach, the Cartesian components of the velocity are kept as the dependent variables, since the choice of the covariant or the contravariant velocity components would lead to a much more complex set of equations.

在当前方法，因为协变量的选择或contravariant速度组分将导致等式，复杂的形势速度的解析的组分被保留作为因变量。

Bradley explained this effect in the context of Newton's corpuscular theory of light, by showing that the aberration angle was given by simple vector addition of the Earth's orbital velocity and the velocity of the corpuscles of light (just as vertically falling raindrops strike a moving object at an angle).

布拉德利解释这种效应的背景下，牛顿corpusculartheoryoflight，经表明像差角度作了简单的载体，增加了地球的轨道速度与速度段体轻(就像垂直下落雨滴罢工运动物体的夹角)。

The mean and turbulence characteristics of velocity fields of turbulent round jets at different velocity ratios in counterflow and coflow ambient are investigated thoroughly.

全面研究了不同射流流速比下反向流动和同向流动环境水体中紊动圆射流流速场的时均特性和紊动特性，分析了流速比对射流特征参数的影响。

Grasp how to calculation of gas velocity, critical velocity and flow rate.

掌握喷管中气体流速、流量的计算，会进行喷管外形的选择和尺寸的计算。

It is found that the friction coefficient increases with the increase of sliding velocity, and there is critical velocity.

试验发现，摩擦系数随滑动速度的增加而增加，存在临界滑动速度。

The composition and working law of the induction velocity measurement sensor and some critical problems about underwater velocity measurement have been analyzed and discussed.

对感应测速传感器的组成、工作原理、水下速度测量的关键问题进行了分析讨论。

On the basis of research result above, the concept of critical velocity is presented and the different influences of water velocity around the critical point are study to help the future design of hot stamping mould.

在以上研究结果基础上提出速度临界值的概念，分析水流速度在临界点两侧对模具换热的不同影响，为模具冷却系统的工程设计提供了理论支持。

The relationship of wave velocity to wavelength of surface wave of liquid with low surface tension was discussed.By using the similarity of wave crest to cylindrical lens,a new method for measuring the velocity of liquid phase wave in the range of specified wavelengths was proposed, its applicational scope was determined by means of simulation evaluation,and meantime,this model was simulated in the lab.

探讨了低表面张力液体的表面波波速与波长的关系，利用该液体的单个波峰性质与圆柱透镜性质相似的特点，提出了一种新的在特定波长范围内测量该液体相速度的方法，并通过模拟计算确定了该测量方法的适用范围，同时在实验室模拟了该模型，实验结果表明在一定范围内该测量方法具有较高的精度。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网