ionospheric
| reflection
| ionospheric | |
| astr. | ionosferico |
| reflection | |
| gen. | riflesso |
| earth.sc. | riflessione acustica |
| earth.sc. el. | riflessione |
| environ. | riflessione |
| |||
| ionosferico | |||
|
ionospheric : 93 phrases in 11 subjects |
| Acoustics | 1 |
| Astronomy | 6 |
| Communications | 20 |
| Electronics | 23 |
| General | 1 |
| Life sciences | 6 |
| Measuring instruments | 2 |
| Natural sciences | 1 |
| Radio | 31 |
| Sound recording | 1 |
| Transport | 1 |