perihelion

perihelion读音音标

英 [ˌperɪ\'hi:lɪən]

美 [ˌperɪ\'hilɪrn]

perihelion意思解释

n.

近日点；

变形

复数：perihelia

英英释义

n.

periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun

双语例句

用作名词(n.)A comet is at perihelion when it is closest to the sun.彗星*接近太阳时，它就是在近日点。The anomalistic year is the time between successive transits of the Earth through the perihelion.近点年是地球连续两次通过近日点之间的时间。