当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。

When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.

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当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。

When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.

youdao