 |
| |||
| 对破岩的质量评价 | |||
|
qualitative evaluation of fragmentation : 2 phrases in 1 subject |
| Explosives and Explosive Ordnance Disposal | 2 |
|
| |||
| 对破岩的质量评价 | |||
|
qualitative evaluation of fragmentation : 2 phrases in 1 subject |
| Explosives and Explosive Ordnance Disposal | 2 |