| 词汇 | perihelian |
| 释义 | Definition of perihelian in English:perihelianadjective ˌpɛrɪˈhiːlɪən Astronomy rare
OriginLate 17th century; earliest use found in William Leybourn (1626–1716). From periheli- + -an. Definition of perihelian in US English:perihelianadjectiveˌpɛrɪˈhiːlɪən Astronomy rare
OriginLate 17th century; earliest use found in William Leybourn (1626–1716). From periheli- + -an. |
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