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单词
barnard's loop
释义
Dictionary
See
ring
Barnard's loop
Barnard's loop
or
ring
(
bar
-nardz)
see Orion.
Barnard's loop
[
′bär·nərdz ‚lüp
]
(astronomy)
A large emission nebula, about 10° by 140° in size, around the central portion of Orion, that consists of an expanding shell of gas that probably originated in a supernova.
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更新时间:2025/3/1 9:29:52