perihelion

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

1. When perigee and perihelion coincide tidal range is at its greatest.
当月球与地球到达它们的近地点和近日点的时间恰好重合时,就会引起最大的潮汐.

来自辞典例句

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.

来自辞典例句

3. How much does the direction of perihelion change each orbit?
近日点方向使每个轨道改变了 多少 ?

来自互联网

4. The angular deviation, as observed from the sun, of a planet from its perihelion.
近点距离, 近点角从太阳观察到的行星距近日点的角度偏差.

来自互联网

    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】