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单词
d2 radio source
释义
D2 radio source
D2 radio source
[
¦dē¦tü ′rād·ē·ō ‚sȯrs
]
(astronomy)
A radio source consisting of a small, variable nuclear component sometimes coincident with an optical object, and a second, larger component with a much steeper radio spectrum.
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更新时间:2025/3/15 20:29:01