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| k energy class | |||
| k energy class (FSU earthquake measurement; измерение сейсмичности по системе, принятой в бывшем СССР) | |||
| energy class (FSU earthquake measurement; K; К) | |||
| класс энергии: 3 phrases in 3 subjects |
| Electrical engineering | 1 |
| Military | 1 |
| Oil and gas | 1 |