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单词
o star
释义
O star
O star
[
′ō ‚stär
]
(astronomy)
A star of spectral type O, a massive, very hot blue star with a surface temperature of at least 35,000 K (63,000°F), and a spectrum in which lines of singly ionized helium are prominent.
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更新时间:2024/12/23 4:45:33