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| 维修保养费; 养护费 | |||
| 维修费; 维护成本 | |||
| 养护 〔保养〕 费 | |||
| 维持费; 保养费 | |||
| 养护费用 | |||
| 养护费 (用); 维修费 (用); 维护费 (用); 维持费 (用) | |||
| 维护费 | |||
| cost of maintenance: 9 phrases in 5 subjects |
| Aviation | 1 |
| Business | 3 |
| Ecology | 1 |
| Hydroelectric power stations | 2 |
| Water resources | 2 |
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