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单词 a star
释义

WordReference Random House Unabridged Dictionary of American English © 2024
A star, [Astron.]
  1. Astronomya blue to white star, as Altair, Sirius, or Vega, having a surface temperature between 7500 and 10,000 K and an absorption spectrum dominated by Balmer-series lines of hydrogen. Cf. spectral type.

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更新时间:2024/11/10 12:59:02