Now, when you look at this there is something quite remarkable and the remarkable thing x - throughout this whole trajectory-- if there is no air draft, - if there is no friction-- is not changing.
你们可以看到,有件事非常值得注意,可以注意到,方向的速度，is，that，the，velocity，in，the，x，direction,在整个轨迹当中-,如果没有空气阻力，也没有摩擦力-,是不会改变的。
In like manner, meteors super heat the air along their trajectory, and UFOs not only create their own gravity centers, they also create their own magnetic fields.
以类似的方式，流星使沿路的空气变得过热，而UFO不仅会生成自己的重力中心，还会产生它们自己的磁场。
The effects of frication, air frication on the speed and trajectory of projectiles have been fully considered.
主要考虑了摩擦力、空气阻力等因素对弹丸的速度和轨迹的影响。
The essential characteristics, flight sequence, trajectory design and optimal analysis for air launch vehicle are discussed.
讨论了空中发射运载火箭的基本特点、飞行方案、发射轨道设计和优化分析方法。
AirKick works propelling participants through the air in a pre-calculated parabolic trajectory using a special combination of air pressure and water recoil technology.
空气弹射巧妙地将空气压力和水流反冲技术结合起来，把参与者按照预先计算好的抛物线轨迹抛到空中。
Once a swimmer is in the air the trajectory of the center of gravity is set and cannot be changed by any body movements.
游泳运动员在空中时，身体重心的运动轨迹一经确定，就不会因为任何一种身体动作而有所改变。
The trajectory of these two attachment points adds a degree of freedom to the shock mounting system and creates a more complex leverage ratio, one that is optimized for use with an air shock.
这两个附加点的轨迹使防震系统更为自由，并且使杠杆比率更为复杂，对于空气冲击的使用也得以优化。
Testing the temperature distribution of the cold air attached jet on the double shutter, we can determine the trajectory of a core air temperature jet.
测试了百叶送风口低温贴附射流温度分布，确定了其射流轴心温度轨迹。
Precision prediction capability for trajectory is the base of software for air traffic control.
精确的航迹预测能力是空中交通管制软件的开发基础。
Some real-time computation problems for the optimization of air defence missile trajectory are presented, and the quasi-Newton methods are used to compute the initial optimization trajectory.
提出防空导弹轨道优化的一些实时计算问题，并且应用拟牛顿法计算初始优化轨道。
The longitudinal glide trajectory design for general air-to-ship missile is studied. Using spline function as glide standard trajectory of missile is presented.
对一般空舰导弹的纵向下滑弹道进行了设计研究，提出用样条函数作为导弹的纵向下滑基准弹道。
The air resistance of damper of 1-dimension trajectory correcting fuses (1-D TCF) is measured under pill angle of attack and low wind speed.
一维弹道修正引信阻力器空气阻力的简捷测量，是在弹丸零攻角、低风速下测量空气阻力的试验方法。
The air resistance of damper of 1-dimension trajectory correcting fuses (1-D TCF) is measured under pill angle of attack and low wind speed.
一维弹道修正引信阻力器空气阻力的简捷测量，是在弹丸零攻角、低风速下测量空气阻力的试验方法。
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