 |
| ketels: 55 phrases in 16 subjects |
| Agriculture | 1 |
| Chemistry | 3 |
| Cultural studies | 1 |
| Earth sciences | 3 |
| Energy industry | 3 |
| Environment | 2 |
| General | 3 |
| Industry | 4 |
| Mechanic engineering | 18 |
| Medical | 4 |
| Metallurgy | 1 |
| Municipal planning | 2 |
| Patents | 1 |
| Technology | 1 |
| Transport | 5 |
| Work flow | 3 |