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单词 θ207487
释义
society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft (25)

Subcategories:

— escape from gravity field of planet (2)
— loss of surface material in atmosphere (1)
— orbiting (6)
— entry into specific trajectory or orbit (4)
— moving out of orbit (1)
— plan of successive trajectories (1)
— middle of course (1)
— point at greatest distance from earth (1)
— point in lunar orbit (2)
— close approach to a celestial body (2)
— course change by use of gravitational field (1)
— narrow area to be passed through (1)
— positioning on return path using gravitation (1)
— return to earth's atmosphere (1)
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更新时间:2024/11/13 13:13:24