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| 放气管: 70 phrases in 18 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 1 |
| Business | 1 |
| Chemistry | 1 |
| Compressors | 1 |
| Construction | 2 |
| Drilling | 1 |
| Electronics | 8 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 5 |
| Metallurgy | 7 |
| Oil / petroleum | 3 |
| Polymers | 1 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 27 |
| Telecommunications | 2 |
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