| 单词 | perihelion |
| 释义 | perihelion (once / 24831 pages) n WORD FAMILY perihelion: perihelia USAGE EXAMPLESPerihelion Brewery is the hot new pub on Beacon Hill. Seattle Times(Jun 01, 2016) This made it the object with the farthest-known perihelion, just beating the dwarf planet Sedna, whose perihelion is 76 AU. Nature(Mar 14, 2016) As the diagram shows, the points of closest approach of these objects to the sun, known as their perihelia, almost coincide. Economist(Jan 20, 2016) n periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun Ant|Hyper aphelion apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun periapsis, point of periapsis (astronomy) the point in an orbit closest to the body being orbited |
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