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单词 escape velocity
释义

WordReference Random House Unabridged Dictionary of American English © 2024
escape veloc′ity, [Physics, Rocketry.]
  1. Physics, Rocketrythe minimum speed that an object at a given distance from a gravitating body must have so that it will continue to move away from the body instead of orbiting about it.
  • 1950–55

Collins Concise English Dictionary © HarperCollins Publishers::
escape velocity n
  1. the minimum velocity that a body must have in order to escape from the gravitational field of the earth or other celestial body
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