 |
| |||
| unstable ground | |||
| 不 稳定 地: 15 phrases in 6 subjects |
| Bridge construction | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Oil / petroleum | 3 |
| Technology | 8 |
|
| |||
| unstable ground | |||
| 不 稳定 地: 15 phrases in 6 subjects |
| Bridge construction | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Oil / petroleum | 3 |
| Technology | 8 |