单词 | Jupiter |
释义 | Jupiter [`jü·pǝd·ǝr] ASTRONOMY The largest planet in the solar system, and the fifth in order of distance from the sun; semimajor axis = 485 × 106 miles (780 × 106 kilometers); sidereal revolution period = 11.86 years; mean orbital velocity = 8.2 miles per second (13.2 kilometers per second); inclination of orbital plane to ecliptic = 1.03; equatorial diameter = 88,700 miles (142,700 kilometers); polar diameter = 82,800 miles (133,300 kilometers); mass = about 318.4 (earth = 1). |
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