Astronomy. A region in the sun's corona (generally associated with a solar flare) that is temporarily at a higher temperature than normal and is…
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| 单词 | θ907 |
| 释义 | the world > the universe > sun > solar activity > [noun] > solar flare (3) hot spot1936 Astronomy. A region in the sun's corona (generally associated with a solar flare) that is temporarily at a higher temperature than normal and is… flare1937 Astronomy. A sudden increase in brightness of part of the sun as seen at certain visible and ultra-violet wavelengths. Also solar flare. solar flare1938 = flare, n.1 1b. |
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