“spiral arms”的概念、定义、翻译、参考文献-科学参考

单词	spiral arms
释义	spiral arms [`spī·rǝl `ärmz] ^ASTRONOMY The shape of sections of certain galaxies called spirals; these sections are two so-called arms composed of stars, dust, and gas extending from the center of the galaxy and coiled about it.
随便看	pseudo cross-bedding pseudocrystal pseudocumene pseudocumol Pseudocycnidae pseudocyesis Pseudodiadematidae pseudodiffusion pseudoequivalent temperature pseudofault pseudofibrous peat pseudo front pseudogalena pseudogamy pseudogene pseudoglanders pseudogley pseudo-Goldstone bosons pseudogradational bedding pseudohalogen pseudohermaphroditism pseudoinstruction pseudoionone pseudokarst pseudokettle

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