(of space vehicles etc.), a speed sufficient to overcome the gravitational force of a planet.
| 单词 | θ207489 |
| 释义 | society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > escape from gravity field of planet > speed sufficient for (1) escape velocity1934 (of space vehicles etc.), a speed sufficient to overcome the gravitational force of a planet. |
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