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| English | Russian |
| average amount of time per year that the supply to a customer is interrupted considering the total number of customers in the system | средний индекс длительности прерываний в работе системы (час MichaelBurov) |
| average number of times per year that the supply to a customer is interrupted considering the total number of customers in the system | средний индекс частоты прерываний в работе системы (– к-во MichaelBurov) |