nova是什么意思,nova怎么背,怎么记,nova的词根词缀巧记速记方法,nova构词,构成,中文翻译_英语词典

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nova n 新星（now+a表示物体→新天体）

释义2： nova
/ 5nEJvE /

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◙ (pl. novae -viː 或 novas)
1. [Astronomy] a star showing a sudden large increase in brightness and then slowly returning to its original state over a few months
• [天文] 新星。
--› see supernova
2. Novae are believed to occur in binary star systems. Material falling from a companion star to the surface of a white dwarf collects over a long period, increasing in density and temperature, until there is a sudden runaway thermonuclear reaction which blasts much of the accumulated material into space. Novae are often visible in small telescopes, and sometimes to the naked eye1. late 19th cent.: from Latin, feminine of novus 'new' (because such stars were thought to be newly formed)

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包含nova

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