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词汇 perihelial
释义 peri·he·li·al 英ˌperɪ'hiːlɪən美ˌperɪ'hiːlɪən
基本英英搭配近义反义例句
n.近日点⁶⁷;最高点³³形容词perihelial名词复数perihelia
Noun:
periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sunperihelion distance近日距advance of the perihelion近日点前移
反义词 aphelion远核点

名词100%
用作名词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。
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