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penumbral waves
释义
penumbral waves
penumbral waves
[
pə′nəm·brəl ′wāvz
]
(astronomy)
Waves that are often observed to propagate outward across the penumbrae of large sunspots when the penumbrae are viewed in the light of the Hα spectral line of hydrogen.
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更新时间:2026/8/16 16:05:35