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| |||
| 交配期 | |||
| 配种期 | |||
| 售后服务服务间隔周期; 维护间隔; 保养周期 | |||
| 工作期间 | |||
| 使用期限; 工作期限 | |||
| 服务周期 | |||
| 使用时期; 维修时期; 服务时期; 运行期; 自然采光时间 | |||
| service period: 26 phrases in 14 subjects |
| Automobiles | 2 |
| Business | 2 |
| China | 1 |
| Economy | 1 |
| International trade | 1 |
| Management | 2 |
| Metallurgy | 2 |
| Navigation | 1 |
| Project management | 1 |
| Rail transport | 1 |
| Technology | 8 |
| Telecommunications | 2 |
| United Nations | 1 |
| Wind Energy | 1 |
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