 |
| |||
| тяжёлая доменная граница | |||
| толстостенный (Rusya 21) | |||
| heavy wall: 23 phrases in 15 subjects |
| Astronautics | 1 |
| Bridge construction | 1 |
| Caspian | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 2 |
| Mining | 1 |
| Oil / petroleum | 4 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Pipelines | 1 |
| Sakhalin | 2 |
| Technology | 4 |