“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	topological invariant topological isomorphism topological isotopy topological kernel topological knot topological K-theory topological lattice topological limit topological linear space topological logic topologically algebraic topologically complete set topologically complete space topologically conjugate topologically conjugate homeomorphism topologically embeddable topologically equivalent topologically equivalent spaces topologically free set topologically hyperbolic manifold topologically inequivalent topologically invariant topologically irreducible representation topologically isomorphic topologically isotopic embedding

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