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| 干线连接炮孔内下行线或支线〈导爆索或非电起爆管〉的地表导爆索或非电导爆管线路 | |||
| 干线; 铁路干线; 中继线 | |||
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trunkline : 6 phrases in 4 subjects |
| Company name | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Oil / petroleum | 2 |
| Technology | 1 |
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