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发动机燃烧 : 79 phrases in 8 subjects |
| Air defense | 1 |
| Automobiles | 15 |
| Aviation | 21 |
| Chemistry | 1 |
| Combustion gas turbines | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Space | 23 |
| Technology | 16 |
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