 |
| filter elements: 27 phrases in 9 subjects |
| Automobiles | 7 |
| Chemistry | 1 |
| Communications | 4 |
| Environment | 1 |
| General | 3 |
| Mechanic engineering | 2 |
| Nuclear physics | 4 |
| Technology | 1 |
| Transport | 4 |
|
| filter elements: 27 phrases in 9 subjects |
| Automobiles | 7 |
| Chemistry | 1 |
| Communications | 4 |
| Environment | 1 |
| General | 3 |
| Mechanic engineering | 2 |
| Nuclear physics | 4 |
| Technology | 1 |
| Transport | 4 |