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| frequency slew rate (july000) | |||
| Rate of Change of Frequency (ROCOF Хветер); df/dt (frequency rate change or ROCOF Zamatewski) | |||
| скорость изменения частоты: 9 phrases in 6 subjects |
| Automated equipment | 1 |
| Energy industry | 1 |
| Mass media | 4 |
| Measuring instruments | 1 |
| Military | 1 |
| Solar power | 1 |