“main-belt comet”的概念、定义、翻译、参考文献-科学参考

单词	main-belt comet
释义	main-belt comet Encyclopedia 理学哈雷彗星释 main-belt comet主带彗星起源于小行星主带（2～4天文单位）、轨道特征与主带小行星一致、可呈现出类似彗星活动性的小天体，其活动性由水冰升华驱动。 Astronomy main-belt comet主带彗星
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