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单词 f star
释义

F star


noun Astronomy.

a white to yellow star, as Canopus, Polaris, or Procyon, having a surface temperature between 6000 and 7500 K and an absorption spectrum in which the pair of ultraviolet lines of singly ionized calcium and the Balmer series of hydrogen are of about equal strength.
Compare spectral type.

Words nearby F star

FSH, FSH-RF, FSLIC, FSO, FSR, F star, f-stop, f-system, Ft., FTA-ABS test, ft-c
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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更新时间:2024/9/24 1:24:11