“north American nebula”的概念、定义、翻译、参考文献-科学参考

单词	north American nebula
释义	north American nebula Encyclopedia 理学发射星云释 north American nebula北美星云位于天鹅座尾部的发射星云。《星云星团新总表》中的编号为NGC7000，因其形似北美洲大陆而得名。
随便看	political slogan political socialization political sociology political speech political stability political state political stratification political structure political structure of society political subject political superstructure political system in ancient Greek polis political system of ancient Rome political system of Europe in Middle Ages political theory political thought in Ming dynasty of China political thought in Qin and Han dynasties of China political thought in Qing Dynasty of China political thought in Song Dynasty political thought in Spring and Autumn and Warring States Periods of China political thought in Sui and Tang dynasties of China political thought in the Taiping Heavenly Kingdom political thought in Yuan dynasty of China political thought of ancient Chinese peasant war leadership political thought of bourgeois democratic revolutionary in modern China

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