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hours in operation (Typically, this type of engine is overhauled after 17000 hours in operation. Alexander Demidov); hours of operation (Alexander Demidov) | |||
fired hours (применимо к эксплуатации турбин Tanyabomba) | |||
working hours (В. Бузаков) | |||
| |||
operating hour |
часы наработки : 9 phrases in 4 subjects |
Aviation | 4 |
Energy industry | 1 |
Military | 1 |
Technology | 3 |