| |||
| direction of propagation; propagation direction | |||
|
direction de propagation : 9 phrases in 5 subjects |
| Electronics | 2 |
| Natural resourses and wildlife conservation | 4 |
| Radio | 1 |
| Research and development | 1 |
| Technology | 1 |
| |||
| direction of propagation; propagation direction | |||
|
direction de propagation : 9 phrases in 5 subjects |
| Electronics | 2 |
| Natural resourses and wildlife conservation | 4 |
| Radio | 1 |
| Research and development | 1 |
| Technology | 1 |