 |
| |||
| safety explosive | |||
| |||
| mining explosive; permissible explosive | |||
| safety explosive | |||
|
explosif de securite : 5 短语, 2 学科 |
| 一般 | 4 |
| 联合国 | 1 |
|
| |||
| safety explosive | |||
| |||
| mining explosive; permissible explosive | |||
| safety explosive | |||
|
explosif de securite : 5 短语, 2 学科 |
| 一般 | 4 |
| 联合国 | 1 |