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plazo de tiempo | |||
intervalo de tiempo | |||
muestra temporal |
intervalo de tempo : 40 phrases in 8 subjects |
Communications | 13 |
Earth sciences | 1 |
Electronics | 19 |
Information technology | 2 |
Labor law | 2 |
Metallurgy | 1 |
Power system protection | 1 |
Statistics | 1 |