 |
| tube brush: 10 phrases in 8 subjects |
| Chemistry | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 3 |
| Medical | 1 |
| Technology | 1 |
| Transport | 1 |
|
| tube brush: 10 phrases in 8 subjects |
| Chemistry | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 3 |
| Medical | 1 |
| Technology | 1 |
| Transport | 1 |