详细释义
- 最高点
- 【天】近日点
- 极点
n. (名词)
英英释义
Noun:
-
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
- 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。 - 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。
用作名词 (n.)
用法讲解
- perihelion distance 近日距
- advance of the perihelion 近日点前移
相关词汇
- aphelion 远核点
【反义词】
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