我们坐在其中的一列火车上带着特制的速度测量仪，可以测出两列火车之间的相对速度。
We are seated in one of the trains, and with us we have a special speedometer that measures their relative speed.
结合群众的相对速度测量，可以计算出它们的质量直接明星。
Combining the measured velocity with the relative masses, they can calculate the mass of the star directly.
这有点像是突然转向的赛车在环形赛道上相撞，月亮们也在同一轨道公转，所以他们之间的相对速度很小。
Like racing cars that swerve and hit each other on a circular track, the moons' speed relative to each other is low because they travel in nearly the same orbit.
但是从他最初超我车时的相对速度来判断，我不敢肯定。
But judging by our relative speeds when he'd originally passed by, I'm not so sure.
通过这个过程，教练可以大体得知船员的划船能力以及和其他组员组合后的相对速度。
This exercise gives coaches a good indication of each oarsman’s boat-moving ability—and of the relative speed of combinations of rowers.
我们问，“测算球的相对速度和角度，判断白球到球袋的距离以及最后的位置呢？
we asked. 'Measuring the relative speed and angles of the balls, the distances to the pocket and final placement of the white ball?'
1969年的第一天，北极的高空上，两位英国文学教授正以每小时1200英里的相对速度相互靠近。
High, high above the North Pole, on the first day of1969, two professors of English literature approached each other at a combined velocity of 1,200 miles per hour.
字段访问相对速度较快，但在少数时候，getter访问可能会提供与直接字段访问略有不同的值，特别是在涉及子类的时候。
Field access may be marginally faster, but rarely. Sometimes, getter access may provide a slightly different value from direct field access, especially when subclasses are in play.
如果你回答说是的，那么你就又错了。我们所能够完全肯定的一点只是这两列火车之间的相对速度变了。
If your answer is yes, then you are wrong again. All we can be certain of is that the relative speed between the two trains changed.
但是，如果您运行的电机功率约为60你会得到一个相对速度为每分钟6 - 10米。
But, if you run the motor power at around 60 you will get a relative speed of 6-10 feet per minute.
本文作者定量分析计算由转轮有限叶片数引起的叶片出口相对速度分布状态，并以所获结果提出了改善叶片设计的措施。
The author of this paper analyzes and calculates the relative velocity distribution at the blade exit of runner caused by limited blades and offers the way to improve blade design.
在两者的结合是明显的风，这是相对速度风相对船的议案。
The combination of the two is the apparent wind, which is the relative velocity of the wind relative to the boat's motion.
计算结果表明，除非初始汽膜厚度或相对速度很大，否则计算高温颗粒在液面下运动的阻力时必须要考虑蒸发阻力。
The calculation results prove that unless the initial film thickness or the relative velocity is very large, the inner evaporation drag should be taken into account at high temperature conditions.
这样做既提高了系统的经济性，简化了结构，又使得系统具有了同时测量目标距离、相对速度和方位角的功能。
The cost of the system is reduced and the structure is predigested, and it makes the detection system can measure distance, relative velocity and azimuth angle at the same time.
本文导出了混合理想气体中分子相对速度的分布，并由此计算了混合理想气体中分子的碰撞频率和平均自由程。
At present paper, we deduced the relative velocity distribution of mixed ideal gas molecule. Then we got the average collide frequency and average free distance.
这种应用不仅可以获得对目标、导弹及其相对速度的实时测量，还可以完成脱靶矢量的实时测量。
This application not only acquires the realtime measurement of target, missile and relative velocity, but also completes the real-time measurement of MDI vector.
随着循环量的增大，立管内的负压差梯度及气固相对速度也随之增大；
The negative pressure gradient and slip velocity in standpipe increase with the increase of circulating rate.
驱动轮和销轨的相对速度按正弦函数变化。
The relative speed between driving wheel and pin rail varies with sinusoidal function.
研究认为，烟幕微粒的运动状态主要决定于烟幕云团与微粒的相对速度和湍流强度。
Investigation reveals that smoke particles kinestate is decided mainly by the relative velocity between smoke cloud and particles and the smoke cloud turbulent intensity.
在测得转轮内部的绝对速度矢量后，按速度三角形原理进行分解，得到了绝对速度切向分量、相对速度及相对速度切向分量。
The absolute velocity was decomposed based on the law of velocity triangle, the absolute tangential velocity, the relative velocity and the relative tangential velocity were presented in this paper.
计算表明，激波器偏心距和激波器半径对最大相对速度的影响最明显，是影响胶合磨损的主要影响因素；
The results showed that the highest relative speed is affected mainly by eccentricity and radius of eccentric gear, and led to the agglutination.
针对平面拦截问题，选择导弹和目标之间的相对速度矢量与导弹-目标视线之间的夹角（称为相对航向误差角）作为将要被控制到零的输出。
For the case of planar interception, the so called relative heading error angle between the relative velocity vector and the LoS (Line of Sight) is chosen as the output to be controlled to zero.
继而分析了在边界层中脱离壁面的汽泡上的作用力，导出了汽泡运动相对速度的计算公式及汽泡走向管子轴心的速度的计算公式。
The forces acting on the departing bubble are also analysed. and the formulas for calculating the relative velocity and the velocity with which the bubble moves to the tube axis are obtained.
棒垒球运动是一项比心理素质，比意识，比相对力量，比相对速度和耐力，同时又比灵巧的运动项目。
The baseball and softball game are one of sports which compare with psychological diathesis, consciousness, relative power, relative velocity, relative muscular endurance and dexterity.
随后给出了一种以链路距离变化率作为相对速度来计算多普勒频移的新方法。
Then a new method of computing Doppler shift is presented, in which the variation of link length is regarded as the relative velocity between satellite and earth station.
绘制了两齿面接触点处相对速度的速端曲线图。
The extremity curve of the velocity vector at the contact point was also drawn up.
绘制了两齿面接触点处相对速度的速端曲线图。
The extremity curve of the velocity vector at the contact point was also drawn up.
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