| 单词 | roche limit |
| 释义 | Roche limit in British English (rɒʃ) noun astronomy the distance from the centre of a body, such as a planet, at which the tidal forces are stronger than the mutual gravitational attraction between two adjacent orbiting objects Word origin C19: named after E. A. Roche (1820–83), French mathematicianRoche limit in American English (roʊʃ) the lowest possible altitude at which a natural satellite can form and orbit, withstanding the fragmenting force of the gravitational pull of a planet or other primary celestial body see also ring2 (sense 14) Word origin after E. Roche (1820-83), Fr astronomer |
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