active source
| electromagnetic method
| active source | |
| wind. | 放射源 |
| electromagnetic method | |
| earth.sc. | 电磁法 |
| IT | 电磁法 |
| |||
| 放射源 | |||
|
active source : 11 phrases in 6 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Oil / petroleum | 5 |
| Technology | 2 |