“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	algebraic surface of order two algebraic symbol algebraic system algebraic tangle algebraic tensor product algebraic theorem algebraic theory algebraic theory of linear systems algebraic theory of numbers algebraic topology algebraic torus algebraic transformation algebraic transformation group algebraic transformation space algebraic unit algebraic unknotting number algebraic value algebraic variety algebraic variety of general type algebraic vector bundle algebraic version of the Gauss Manin connection algebraic version of the Gauss-Manin connection algebra isomorphism algebraist algebraizable

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