 |
| |||
| 不含沥青的 | |||
| asphalt-free: 5 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Oil / petroleum | 2 |
| Technology | 1 |
|
| |||
| 不含沥青的 | |||
| asphalt-free: 5 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Oil / petroleum | 2 |
| Technology | 1 |