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explosion motor : 14 phrases in 9 subjects |
| Chemistry | 1 |
| Compressors | 1 |
| Drilling | 1 |
| Electric machinery | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 4 |
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