“OB association”的概念、定义、翻译、参考文献-科学参考

单词	OB association
释义	OB association [¦ō`bē ǝ´sō·sē`ā·shǝn] ^ASTRONOMY A grouping of very young, very hot massive stars of spectral types O and B that has not had time to disperse.
随便看	ring vessel ring vortex ringwall structure ring whizzer ringworm rinkite rinkolite rinneite rinse Riodininae riometer riot-control agent riot grenade riot gun Rio Tinto process rip riparian riparian water loss ripbit rip channel rip current ripe ripidolite rip panel ripping bar

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