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单词 stellar association
释义

WordReference Random House Unabridged Dictionary of American English © 2024
stellar association, [Astron.]
  1. Astronomya sparsely populated group of between 10 and 1000 young stars of similar spectral type and common origin that are moving too fast to form a permanent, gravitationally bound system.
Also called association of stars, association. Cf. globular cluster, open cluster. 
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