“Perseus arm”的概念、定义、翻译、参考文献-科学参考

单词	Perseus arm
释义	Perseus arm [`pǝr·sē·ǝs ´ärm] ^ASTRONOMY A spiral arm of the Milky Way galaxy visible in the constellation Perseus, located (as viewed from the earth) in the direction opposite that of the galactic center.
随便看	Arctic suite arctic tree line Arctic Zone Arctiidae arc time arc-to-chord correction Arctocyonidae Arctolepiformes arc triangulation Arcturidae Arcturus arcuale arcuate arcuated arcuate delta arcuation arcus arc voltage arcwall coal cutter arc-welder's disease arc welding arcwise connected set Arcyzonidae ARDC model atmosphere ardealite

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