“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	cheminformatics; chemoinformatics Che Mingzhou chemiosmosis chemiosmotic hypothesis chemiosmotic theory chemisorption Chemistry chemistry Chemistry and Industry of Forest Products chemistry at Harvard macromolecular mechanics chemistry at Harvard macromolecular mechanics, CHARMM chemistry gas composition analysis chemistry of americium (Ⅲ) chemistry of Chinese medicines chemistry of cluster compound chemistry of element chemistry of elements chemistry of energy source chemistry of forest products chemistry of pine oleoresin chemistry of rare gas chemistry of salt lake chemistry of salt lake resource chemistry of sea water resources chemistry of silicate

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