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| 炮孔布置形式; 炮孔布置方式 | |||
| 爆破顺序; 爆破模式; 爆破方式; 爆破布置 | |||
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blasting pattern : 9 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 7 |
| Technology | 2 |
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