单词	sporadic E layer
释义	sporadic E layer noun : a layer of ionization occurring irregularly within the E region of the ionosphere Word History First Known Use 1949, in the meaning defined above
随便看	gralloching grallochs gram gram calorie Gram complex gram equivalent gram molecular weight gram stain Gram's stain gram-atom gram-atomic weight gram-centimeter gram-fast gram-molar gram-molecular gram-negative gram-positive gram-sec gram-variable grama gramaries gramary gramarye gramaryes gramas

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