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| 生产保养; 生产维修 | |||
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| 生产保养维护 | |||
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production maintenance : 11 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 4 |
| Business | 1 |
| Ceramics | 1 |
| Electronics | 1 |
| Space | 2 |
| Textile industry | 1 |
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