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| коэффициент продолжительности | |||
| 持 续 率: 20 phrases in 9 subjects |
| Automated equipment | 1 |
| Electronics | 3 |
| General | 4 |
| Jet engines | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Technology | 7 |
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