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单词 Trojan planet
释义 Trojan planet
[`trō·jǝn `plan·ǝt]
ASTRONOMY
One of a group of asteroids whose periods of revolution are about equal to that of Jupiter, or about 12 years; these bodies move close to one or the other of two positions called Lagrangian points, 60° ahead of or 60° behind Jupiter; the asteroids near these positions are known as Greeks and Pure Trojans respectively.
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