单词 | Lagrangian points |
释义 | Lagrangian points [lǝ`grän·jē·ǝn ´poins] ASTRONOMY Five points in the orbital plane of two massive objects orbiting about a common center of gravity at which a third object of negligible mass can remain in equilibrium; three points of instable equilibrium are located on the line passing through the centers of mass of the two bodies, and two points of stable equilibrium are located in the orbit of the less massive body, 60° ahead of or behind it. |
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