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| 预防性维护时间 | |||
| 预防性维修时间 | |||
| 预性安排时间; 预防维护时间 | |||
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preventive maintenance time : 10 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 1 |
| Electronics | 1 |
| Reliability | 3 |
| Space | 1 |
| Telecommunications | 1 |
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