单词 | active regions |
释义 | active regionsactive regionsRegions of intense localized magnetic field on the Sun that extend from the photosphere, through the chromosphere, to the corona. They may encompass a variety of phenomena, such as sunspots, faculaeplages, filaments (or prominences), and flares, and are characterized by enhanced emission of radiation at X-ray, extreme-ultraviolet, and radio wavelengths. |
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