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| 动力单位 | |||
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| 动力单位 | |||
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dynamical unit : 14 phrases in 10 subjects |
| Aviation | 1 |
| Drilling | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydroelectric power stations | 1 |
| Mechanics | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 3 |
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