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| полезное сечение углей | |||
| живое сечение; активное сечение; действующее сечение; полезное сечение; эффективное сечение | |||
| 有效截面: 36 phrases in 11 subjects |
| Electronics | 7 |
| General | 12 |
| Geology | 1 |
| Hydrography | 1 |
| Metallurgy | 3 |
| Microelectronics | 1 |
| Military | 1 |
| Nuclear chemistry | 1 |
| Oil and gas | 1 |
| Physics | 1 |
| Technology | 7 |
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