period of sunspot activity 中文意思是什麼
period of sunspot activity
解釋
太陽黑子活動周期-
Since sunspot number is closely related to solar activities like flares and coronal mass ejection, the sun might have entered a low - activity state for a rather long period of time during these minimums
由於太陽黑子數目與如耀斑和日冕拋射等太陽活動關系密切,在上述太陽黑子極小期內,太陽的活動可能沉寂了一段長時間。
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