 |
| твёрдость по Роквеллу: 74 phrases in 22 subjects |
| Construction | 6 |
| Drilling | 4 |
| Electrochemistry | 2 |
| Energy industry | 1 |
| General | 2 |
| GOST | 1 |
| Makarov | 1 |
| Mass media | 2 |
| Materials science | 2 |
| Metallurgy | 9 |
| Metrology | 2 |
| Military | 2 |
| Mining | 7 |
| Oilfields | 2 |
| Pipelines | 2 |
| Polymers | 5 |
| Quality control and standards | 6 |
| Roll stock | 1 |
| Sakhalin | 1 |
| Seismology | 2 |
| Technology | 12 |
| Transport | 2 |