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1 ?空气轨迹 ... trajectory optimization 轨道最优化 air trajectory 空气轨迹 hyperbolic trajectory 双曲线轨道 ... 2 ?气流轨迹 ...污染过程 天气系统 气流轨迹 气象模式 深圳地区[gap=1012]Key words: pollution processes; weather system; air trajectory; meteorological model; Shenzhen area... 3 ?空气弹道 air trajectory 空气弹道; 空气轨迹..
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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。 - 2
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U FO不仅会生成自己的重力中心，还会产生它们自己的磁场。 - 3
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。
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