| |||
| ring-shaped | |||
|
ringformat : 13 phrases in 8 subjects |
| Antennas and waveguides | 1 |
| Communications | 1 |
| Earth sciences | 4 |
| Electronics | 3 |
| General | 1 |
| Mechanic engineering | 1 |
| Thermal Energy | 1 |
| Transport | 1 |
| |||
| ring-shaped | |||
|
ringformat : 13 phrases in 8 subjects |
| Antennas and waveguides | 1 |
| Communications | 1 |
| Earth sciences | 4 |
| Electronics | 3 |
| General | 1 |
| Mechanic engineering | 1 |
| Thermal Energy | 1 |
| Transport | 1 |