“periodic variation of corona”的概念、定义、翻译、参考文献-科学参考

单词	periodic variation of corona
释义	periodic variation of corona Encyclopedia 理学太阳物理学释 periodic variation of corona日冕周期变化日冕的形状同太阳活动周期有关：在相对黑子数极大时，日冕近于圆形；而在黑子数极小时则较扁，赤道区延伸较远，两极区延伸较近，且有羽状物。因此，日冕的形状也与黑子数一样，有11年的变化周期。
随便看	information barrier information-based logistics system of aircraft materiel information-based survey method information-based teacher learning information-based waterborne transportation information behavior information behavior ecology theory information behavior motivation information bias information bit information broker information browsing behavior information bulletin Information Bulletin on Variable Stars information business information capacity information capitalism information carrier information center Information Center of the Ministry of Agriculture and Rural Affairs of the People's Republic of China information-centric network，ICN information chain information channel information channels information class

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