Escape velocity is simply the speed of an object that's shot out of a cannon the minimum initial speed so that the object could later escape Earth's gravity on its own.

逃逸速度就是一个物体的速度，比如说，从加农炮中射出的最小初始速度，这样这个物体以后就可以自己脱离地球的引力。

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First through a low velocity core, and then through a high velocity shell, where their speed is increased before they are transmitted into the surrounding seawater.

它们首先通过一个低速的核心，然后通过一个高速的外壳，在它们被输送进周围的海水之前，它们的速度提高了。

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Simply stated, a gas molecule can "evaporate" from a planet if it reaches a speed known as the escape velocity.

简单地说，如果气体分子达到逃逸速度，它就能从一颗行星上“蒸发”。

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This is the starting speed, that's the rate at which it is gaining velocity, and that's how long it's been gaining it.

这是起始时的速度,这是速度的增长速率,这是加速的时间

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What it means is if you'd release a rock at that location one second before with a certain speed that we can calculate, it would've ended up here with precisely the position and velocity it had at the beginning of our experiment.

它的意义在于,若在该处以特定速度抛出一个物体,这个速度可通过计算得到,一秒之后,物体会运动至我们设定的起点,并且速度为我们设定的初速度

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The name might be a stroke of marketing genius, but if you started out with a business called HVLS (high velocity low speed) Fan Company, you might look for something with a little more sex appeal, too.

FORBES: How Big Ass Fans Can Improve Life for Working People, Fix the Economy, and Help Solve World Health Problems.

They start businesses and buy foreclosures and speed the velocity of money around the economy with a gush of pent-up desire to consume after years in the desert.

FORBES: There is also some possibility that the world won't end, you know

This involves pitching the machine's nose up to reduce its forward velocity and increase the speed of rotation of the blades (and thus the amount of lift they provide) to soften the landing.

ECONOMIST: Monitor