游离层 yóulícéng ionosphere Definitions Defs Origin Strokes Stroke Words Sentences Sents 游离层 游離層 yóulícéng ionosphere The region of the upper atmosphere containing a high concentration of free electrons and ions, beginning about 55 kilometers above the earth; it reflects radio waves back to the ground.
游离层 游離層 yóulícéng ionosphere The region of the upper atmosphere containing a high concentration of free electrons and ions, beginning about 55 kilometers above the earth; it reflects radio waves back to the ground.
