By optimizing the objective function with the gradient method the iterative formula about the medium velocity is obtained.
对目标函数进行梯度优化，我们得出了介质速度的迭代公式。
The main parameters that effect horizontal resolution of migration imaging were identified as medium velocity, dominant frequency of seismic wavelet and aperture Angle of migration processing.
结果表明，影响偏移成像水平分辨率的主要参数是介质速度、地震子波主频和偏移处理的孔径角。
When the medium density increases (with more atoms), the slow group velocity decreases.
当介质的密度增加时（包含更多的原子），群速度就降低。
If an object moves through a medium — - air or a liquid — there is a resistive force which always opposes the velocity.
如果物体通过媒介-，比如说空气或者液体-，都会遇到阻力，阻力总是和速度相反。
A medium-thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward.
中等厚度的防风林在背风侧可在20倍于树高的距离而在迎风侧则在3倍于树高的距离上减小风速10%以上。
If you know what m is, the mass of an object, the radius, and you know the values for C1 or C2 of that medium in which you move it, then you can calculate what the terminal velocity is.
如果你知道M是什么，是物体的质量，半径，知道C1值或者，媒介的C2值，然后你，就能算出终极速度。
Phenomenon of the change in velocity of propagation of monochromatic radiations in a medium as a function of the frequency of these radiations.
在介质中传播的单色光改变其传输速度的现象，并由该辐射的频率所决定的。
A method is presented, which makes it possible to calculate velocity and interface depth of the reflected wave in a vertically inhomogeneous medium.
本文提出了一种利用反射波走时曲线计算垂向非均匀介质速度和反射界面深度的方法。
The pressure field distribution, velocity field distribution and path lines of the separated medium flowing in hydrocyclone were numerically simulated.
对旋流器压力场、速度场和分离介质运动迹线分布特征的数值模拟进行了研究。
We present an iterative algorithm for inversely deriving the interval velocity, interval density and curved interface depth from gravimetric and seismic data in lay ered medium.
本文提出一种用于层状介质中重力、地震资料联合反演层速度、层密度及弯曲界面深度的迭代算法。
The results of the computation indicate that the gradient of the gaseous medium and the velocity of gas atoms from the jet cannot cause detectable effects in experiments.
计算结果表明，采用喷阀技术所提供的气体介质的密度梯度和气体原子运动速度的影响很小，不会产生实验上可观测的效果。
There are many factors which affect the wear of metals, such as load, slide velocity, environmental medium and temperature, metal properties and so on.
影响金属材料磨损的因素很多，如载荷、滑动速度、环境介质、温度、材料的性质等。
The propagation velocity of elastic wave with different frequencies in same medium is various, which is called dispersive problem of frequency.
相同介质中不同频率的弹性波传播速度是有差异的，即频散问题。
These are tentatively explained from ZND model. The numerical results show that the adjacent medium affects the velocity and the shape of the detonation front nearby the node.
计算结果显示，毗邻介质影响节点附近的爆轰波阵面形状及爆轰波速度；
The result turns out that the constant velocity medium migration equation is only a special case as the conclusion drawn in the paper stated.
结果表明，恒速介质偏移方程仅是本文所得结论的一种特例。
According to the properties of wave propagation in multiphase medium, the theoretical formulas for calculating the P-wave and S-wave velocity are deduced.
本文基于多相复合介质的波动传播特性，导出介质内纵、横波速的理论计算公式。
Used microscopic flow experimental apparatus to study condensate oil micro-flow characteristics under respectively high, medium and low displacement velocity.
利用可视化微观渗流实验装置进行了高、中、低不同速度下凝析油微观渗流特征实验研究。
The change laws and influential factors of the minimum spouting velocity of a rectangular spouted bed with double nozzles were studied with air as spouting medium.
在双喷嘴矩形喷动床内，以空气为喷动气体，研究了最小喷动速度的变化规律和影响因素。
The pore velocity is the velocity with which a tracer moves through a porous medium.
孔隙速度是示踪元素穿过孔隙介质的速度。
One hand, it extends the ultrasonic measure to dynamic; On the other hand it can roundly correct velocity in all kinds of liquid medium.
另一方面实现了速度综合的自校正，这种校正方法能适应各种不同规律的液体媒介的声速变化。
A method for determining the velocity of seismic wave in two-dimensional medium is presented.
本文针对二维层状介质提出了一种识别地震波速度的新方法。
The geological survey should include the seismic velocity structure in the medium above the bedrock besides the active fault survey etc.
地质调查除活断层等内容外，基岩以上的地质构造以及地震波速结构的调查也是必要的。
Buried pipeline's damage under fluid-structure interaction is analyzed through ADINA-FSI with conveying medium and velocity in consideration.
在考虑管内介质及流速的情况下，应用adina中流体-结构耦合分析求解器adina - FSI分析了固液耦合作用下地下管道的破坏情况。
The nonlinear fitting is made on the relations between the nonlinear modulus and strain. The velocity formula in the elastic medium is corrected by using nonlinear modulus instead of elastic modulus.
对非线性模量与应变的关系作了非线性拟合，用非线性模量来代替弹性模量，对弹性介质中的波速公式作了修正。
Based on it, the elastic wave velocity spatial distribution around a cased hole in tectonic stress field is studied by applying the velocity-stress formula of equivalent medium model.
在此基础之上，应用等效介质模型的速度—应力关系式，研究了地应力场中套管井周弹性波速的空间分布规律。
Parameters, such as smoke filtration velocity, filtration medium thickness and rinsing fluid with respect to quantity and concentration, are to be determined through simulation tests.
通过模拟试验给出了过滤风速、滤料厚度、喷液量和洗涤液浓度的合理范围，对过滤-洗涤式净化设备的研制与设计具有指导意义。
Measuring sound velocity is an important physical experiment. It is possible to know the acoustical characteristics of measured medium by measuring sound velocity.
测量声速是大学物理实验中一个比较重要的实验，通过对声速的测量可以了解被测介质的声学特性。
Experiment results show that. in the three medium, crack growth velocity is minimum in oil, crack growth velocity is maximum in water.
实验结果表明，三种介质中，裂纹在煤油中扩展速率最低，水中裂纹扩展速率最大。
Then the possibility of larger phase velocity and group velocity than light speed in dispersive medium is discussed.
然后从色散介质中相速度与群速度的关系，讨论了相速度和群速度超光速的可能性。
Then the possibility of larger phase velocity and group velocity than light speed in dispersive medium is discussed.
然后从色散介质中相速度与群速度的关系，讨论了相速度和群速度超光速的可能性。
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