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| emergency reserve | |||
| emergency duty; incidental reserve | |||
| 事故备用: 29 phrases in 7 subjects |
| Electric machinery | 5 |
| Electronics | 4 |
| General | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 7 |
| Technology | 8 |
| Telecommunications | 1 |
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