| 释义 |
roche limit
\ˈrȯsh-, ˈrōsh-\ noun
or roche's limit \-shə̇z-\
Usage: usually capitalized R
Etymology: after E. A. Roche died 1833 French mathematician
: the distance between a planet's center and its satellite within which the satellite cannot approach without suffering disruption; specifically : the distance 2.44 times the planet's radius from its center when the planet and the satellite are of the same density |