diàn​lí​céng

ionosphere

电离层 電離層 diàn​lí​céng
ionosphere
The part of the atmosphere containing a high concentration of ions and free electrons, located about 60 to 500 kilometers above the earth; it reflects radio waves and is essential for shortwave communication.

Frequency

Movie subtitles
0.180 per million appears in 0% of films
Written text
0.192 per million

Sources