英语词汇“ob association”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ob association
释义	OB association OB association See association. OB association [¦ō′bē ə‚sō·sē′ā·shən] (astronomy) A grouping of very young, very hot massive stars of spectral types O and B that has not had time to disperse.
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OB association