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| 31. | schedule maintenance |
| 定期维护 |
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| 32. | maintenance screen |
| 维护屏幕 |
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| 33. | maintenance switching |
| 维护转换 |
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| 34. | interactive maintenance |
| 交互维护 |
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| 35. | maintenance test |
| 维护检查 |
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| 36. | security maintenance |
| 安全性维护 |
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| 37. | conservation of living resources |
| 维护资源 |
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| 38. | operational maintenance |
| 运行维护 |
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| 39. | river maintenance |
| 河川维护 |
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| 40. | intercontinental maintenance |
| 洲际维护 |
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