中氣層頂 zhōngqìcéngdǐng mesopause Definitions Defs Origin Strokes Stroke Words Sentences Sents 中气层顶 中氣層頂 zhōngqìcéngdǐng mesopause the boundary region between the mesosphere and the thermosphere
中气层顶 中氣層頂 zhōngqìcéngdǐng mesopause the boundary region between the mesosphere and the thermosphere
