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| Красная медь | |||
| красная медь; технически чистая медь | |||
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紫铜 : 22 phrases in 6 subjects |
| Construction | 2 |
| General | 12 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil processing plants | 1 |
| Technology | 5 |
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