英语词汇“expanding arm”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	expanding arm
释义	expanding arm expanding arm [ik′spand·iŋ ′ärm] (astronomy) A spiral arm of the Galaxy consisting of neutral hydrogen that lies between 2.5 and 4 kiloparsecs beyond the galactic center and is moving out from it at about 85 miles (135 kilometers) per second.
随便看	pseudomembranous rhinitis pseudomeningitis pseudomenstruation pseudomenstruation of the newborn pseudometabolic acidosis pseudo-metallic pseudometanauplius pseudometaplasia pseudo-metric pseudometric pseudomicroseism pseudomixis pseudomnesia pseudomonad pseudomonadaceae pseudomonadales pseudomonades pseudomonadineae pseudomonads pseudomonas pseudomonas acidovorans pseudomonas aeruginosa pseudomonas aeruginosa corpuscular polyvalent vaccine pseudomonas aeruginosa lectin pseudomonas aeruginosa polyvalent corpuscular vaccine

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