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| 81. | low maintenance |
| 少量维护保养 |
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| 82. | maintenance switching |
| 维护转换 |
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| 83. | maintenance test |
| 维护检查 |
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| 84. | security maintenance |
| 安全性维护 |
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| 85. | maintenance therapy |
| 维持疗法 |
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| 86. | income maintenance |
| 入息补助 |
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| 87. | maintenance unit |
| 维修队 |
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| 88. | river maintenance |
| 河川维护 |
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| 89. | line maintenance |
| 线路维修 |
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| 90. | schedule maintenance |
| 定期维护 |
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