| |||
blasting under control | |||
controlled blasting | |||
controlled explosion | |||
| |||
controlled blasting | |||
| |||
controlled blasting |
控制爆破 : 33 phrases in 5 subjects |
Aviation | 1 |
Electronics | 1 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 26 |
Technology | 2 |