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| 正向起爆炸药装人炮孔后,把起爆药卷放在孔口附近使爆轰从孔口传至孔底的起爆方法，也称孔口起爆或顶端起爆 | |||
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top priming : 4 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 2 |
| Technology | 2 |
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