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| MTTF; mean-time-to-failure | |||
| MTFF; mean-cycles-to-failure; mean-time-to-first-failure | |||
| mean time to first failure; MTTFF (mean time to first failure) | |||
| expected time to first failure; mean time to first system failure (системы) | |||
| средняя наработка до первого отказа: 3 短语, 2 学科 |
| 军队 | 1 |
| 石油/石油 | 2 |