All extrapolation operators face the problem of choosing the reference velocity due to continuation in depth.
此类波场外推算子沿深度层进行波场外推，都存在参考速度选择问题。
The velocity of the center of mass has not changed as seen from your frame of reference, because the velocity of center of mass is always the same, remember, because momentum is conserved.
质量重心的速度，并没有发生改变，你在参照系中可以看出，因为质量重心的速度，总是保持不变，要记住，由于动量守恒。
Now, a word about placeholder substitution: Velocity will print any unrecognized reference as plain text, as illustrated by the next two bold lines in Listing 6.
关于占位符替换的一点说明：Velocity把任何不能识别的引用作为普通文本打印，如清单6中下面突出显示的两行(蓝色和红色)所示。
Finally, some Suggestions are put forward on how to improve the velocity accuracy when using reference beam LDV.
最后提出了使用参考光式LDV提高速度测试精度的注意事项。
The velocity is with respect to a fixed frame of reference.
此速度是相对于固定标架的。
Create an empty game object named PhysicsTest and add script PhysicsTest to it and set both, cube reference and initial velocity of it.
创建一个名为“物理测试”的空游戏对象并添加“物理测试”脚本，并设置它的方块引用和初始速度。
Mechanics Kinematics: trajectories, velocity, acceleration, motion of rigid bodies, change of reference frame.
力学运动：轨迹、速度、加速度、运动、刚体动力学变化的参考帧。
The benchmark rev equipment is designed to provide speed reference for tacho generator's testing, which has high velocity precision, wide speed range and stepless speed adjustment.
高精度转速源是为测速发电机的校准测试提供速度基准的驱动系统，具有转速精度高、调速范围宽及无级平滑调速的特点。
It offers reference to the optimal design to the constant velocity joint.
从而为等速万向节的优化设计提供了参考。
This method is of some reference value for other low flow velocity system with tube of small diameter.
该法对其它小管径低流速系统有一定的参考价值。
This can be resolved through calibrating the continuous monitoring system by reference method, and calculating the velocity field coefficient.
通过用参比方法对连续监测系统流速测定值进行校准，求出该监测断面的速度场系数。
The moving reference frame is used in the impeller region and the boundary conditions are velocity inlet and pressure outlet.
在计算时对于叶轮区域采用旋转参考系的方式，边界条件分别是进口速度边界条件以及出口压力边界条件。
Because of limitation of computer software running speed, CNC system using reference-pulse interpolation algorithm have low least input increment and rapid feed velocity.
由于计算机软件运算速度的限制，使用脉冲增量插补算法所得到的数控机床进给运动的精度和速度都比较低。
Expressions of velocities and accelerations in usual coordinates are simply derived by means of the composition formulae of velocity and acceleration in special rotation reference systems.
在一特定的转动参照系中，利用相对运动的速度和加速度合成公式，通过一特定的相对运动简洁地导出常用坐标系中的速度和加速度表达。
The research work offer reference for how to avoid the chewing bottom and floating bottom and hydraulic operated check valve structure design of and how to improve advancing velocity.
本文进行的研究工作可以为如何避免啃底和飘底的问题和液控单向阀的结构设计以及如何提高移架速度提供参考依据。
It is a good reference for the design of the velocity-sensitive system and the selection of the Angle sensor.
对角速度敏感型系统的设计及角度传感器的选型具有很好的借鉴作用。
It is a good reference for the design of the velocity-sensitive system and the selection of the Angle sensor.
对角速度敏感型系统的设计及角度传感器的选型具有很好的借鉴作用。
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