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| 还原层 | |||
| 还原带段，区; 压下区; 工作带 (拉模的) | |||
| 还原带; 还原区 | |||
| 工作带; 压缩带 | |||
| 还原作用带 | |||
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reduction zone : 20 phrases in 2 subjects |
| Metallurgy | 18 |
| Technology | 2 |
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