 |
| |||
| magnetic exploration; magnetometer survey | |||
| magnetic survey | |||
| magnetic prospecting | |||
| dip needle work | |||
| |||
| magnetic prospecting | |||
| |||
| magnetometer survey | |||
| 磁法勘探: 27 phrases in 7 subjects |
| Earth sciences | 5 |
| Electronics | 1 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geology | 1 |
| Oil / petroleum | 6 |
| Technology | 11 |