The score of javelin throwing is closely related with the run-up speed and the highest speed point in throwing.
掷标枪成绩与助跑速度、速度峰值密切相关,标枪出手时机应与最大速度峰值的出现相吻合。
在这个时候速度是关键。
Eleven point two kilometers per second, at which satellites can be freed from the gravitation of the earth, is called "escape speed".
卫星以11.2千米每秒的速度前进可以脱离地球引力,这被称为“逃逸速度”。
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