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abgedichtet : 15 phrases in 10 subjects |
| Chemistry | 2 |
| Coal | 1 |
| Earth sciences | 2 |
| Electric motors | 1 |
| Electronics | 1 |
| Environment | 1 |
| General | 1 |
| Industry | 2 |
| Mechanic engineering | 1 |
| Transport | 3 |
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