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| |||
| maintenance cycle | |||
| maintenance period | |||
| frequency of maintenance; repair cycle | |||
| maintenance periodic time | |||
|
维 修 周期 : 11 phrases in 5 subjects |
| Automobiles | 1 |
| Aviation | 4 |
| Economy | 1 |
| Space | 3 |
| Technology | 2 |
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