“Cygnus loop”的概念、定义、翻译、参考文献-科学参考

单词	Cygnus loop
释义	Cygnus loop [`sig·nǝs ´lüp] ^ASTRONOMY A supernova remnant about 17,000 years old, and 30-40 parsecs across and probably about 770 parsecs distant that emits radio waves and x-rays as well as visible light. Also known as Veil Nebula.
随便看	character pitch character printer character progression character reader character recognition character set character skew character stasis character string character string constant character stroke character style character terminal character-writing tube Charadrii Charadriidae Charadriiformes Charadrioidea Charales charcoal charcoal canister charcoal rot charcoal test Chareae charge

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