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| 爆破硐室; 二次爆破矿房 | |||
| 爆破峒室; 起爆室 | |||
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blasting chamber : 31 phrases in 5 subjects |
| Electronics | 1 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 24 |
| Metallurgy | 2 |
| Technology | 2 |
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