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单词 Cygnus X-1
释义 Cygnus X-1
[`sig·nǝs ´eks `wǝn]
ASTROPHYSICS
A source of x-rays whose intensity varies in an irregular manner, associated with a weak variable radio source and a ninth- magnitude spectroscopic binary star, designated HDE226868, that consists of a blue supergiant and an invisible companion, which may be a black hole. Abbreviated Cyg X-1.
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