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| |||
| 工作小时 | |||
| 维护时间; 服务时间 | |||
| 工作运转时数 | |||
| 运行时数指整个机组累计运行时数 | |||
| 工作小时数; 工作时间 | |||
| 运行时数; 上班时间 | |||
| |||
| 使用时数 | |||
|
service hours : 19 phrases in 9 subjects |
| Automobiles | 2 |
| Business | 5 |
| Economy | 1 |
| Electronics | 3 |
| General | 1 |
| Management | 1 |
| Project management | 1 |
| Technology | 3 |
| Telecommunications | 2 |
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