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| 硝酸铵炸药 (爆破用) | |||
| ammonium explosive: 24 phrases in 6 subjects |
| Chemistry | 3 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 12 |
| Hydroelectric power stations | 3 |
| Space | 1 |
| Technology | 4 |
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