a return flight of a spacecraft accomplished without significant expenditure of fuel through making use of planetary gravitation; usually attributive.
| 单词 | θ207504 |
| 释义 | society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > positioning on return path using gravitation (1) free return1963 a return flight of a spacecraft accomplished without significant expenditure of fuel through making use of planetary gravitation; usually attributive. |
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