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| 定向爆破采用硐室或深孔装药，使爆破岩土按预定方向运动并堆积在设定范围之内的爆破作业 | |||
| 定向爆破 | |||
| directional blasting: 9 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 5 |
| Technology | 4 |
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