 |
| |||
| capa F; región F | |||
| capa de Appleton; capa ionizada de la región ionosférica | |||
|
F-layer : 8 phrases in 3 subjects |
| Communications | 6 |
| Electronics | 1 |
| Information technology | 1 |
|
| |||
| capa F; región F | |||
| capa de Appleton; capa ionizada de la región ionosférica | |||
|
F-layer : 8 phrases in 3 subjects |
| Communications | 6 |
| Electronics | 1 |
| Information technology | 1 |