perihelial

英[ˌperɪ'hiːlɪən] 美[ˌperɪ'hiːlɪən]
  • n.近日点;最高点
perihelial perihelia
    n. (名词)
    1. 最高点
    2. 【天】近日点
    3. 极点

英英释义

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

    用作名词 (n.)
    1. A comet is at perihelion when it is closest to the sun.
      彗星最接近太阳时,它就是在近日点。
    2. 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。

【邻近词汇】