“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	control unit control valve control variable control variable method control variables control variates method control variation control voltage control volume control with communication constraints Control Yuan controversy about freedom of literature and art Controversy about Revolutionary Literature controversy of immediate enlightenment versus gradual enlightenment controversy of Luxun-styled essays Controversy of Two Slogans Controversy Or Problem Of National Style controversy over classical and vernacular Chinese controversy over shramana's salutation to the monarch controversy over the openness and closeness of normal education controversy over the title given to the biological father of Emperor Yingzong of Song Controversy with Independent Writers and the Third Person Writers Controversy with Nationalism Literature Controversy with the JiaYin School Controversy with the XueHeng School

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