“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	muscle of posterior abdominal wall muscle of thigh muscle of upper limb muscle region of foot jueyin muscle region of foot shaoyang muscle region of foot shaoyin muscle region of foot taiyang muscle region of foot taiyin muscle region of foot yangming muscle region of hand jueyin muscle region of hand shaoyang muscle region of hand shaoyin muscle region of hand taiyang muscle region of hand taiyin muscle region of hand yangming muscle relaxant muscles of head muscle spindle muscle strength muscle strength test muscle stretch reflex muscle tissue muscle tone test muscon muscone

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