单词 | advance of the perihelion |
释义 | advance of the perihelion [ǝd`vans ǝv thǝ ¦per·ǝ¦hēl·yǝn] ASTRONOMY The slow rotation of the major axis of a planet's orbit in the direction of the planet's revolution, due to gravitational interactions with other planets and other effects such as those of general relativity. |
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