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enclosures : 45 phrases in 17 subjects |
| Agriculture | 4 |
| Communications | 2 |
| Earth sciences | 4 |
| Electric machinery | 3 |
| Electric motors | 1 |
| Electronics | 4 |
| General | 1 |
| Health care | 6 |
| Industry | 2 |
| Isolation | 2 |
| Magnetics | 1 |
| Mechanic engineering | 8 |
| Metallurgy | 1 |
| Natural sciences | 1 |
| Patents | 1 |
| Power system protection | 2 |
| Transport | 2 |