“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	proximate function proximate indexing proximate nutrients proximate order proximate point proximation proximity proximity analysis proximity compatibility principle proximity effect proximity effects proximity function proximity geometry proximity neighborhood proximity partition proximity potential proximity-preserving proximity product proximity query proximity relation proximity search proximity sensor proximity space proximity structure proximity switch

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。