 |
| испытание на твёрдость: 71 phrases in 18 subjects |
| Chemistry | 17 |
| Construction | 9 |
| Electrochemistry | 1 |
| Forestry | 1 |
| General | 1 |
| Metallurgy | 7 |
| Metalworking | 11 |
| Oil / petroleum | 3 |
| Packaging | 1 |
| Plastics | 2 |
| Polymers | 3 |
| Road works | 3 |
| Shipbuilding | 1 |
| Silicate industry | 1 |
| Technology | 6 |
| Textile industry | 2 |
| Welding | 1 |
| Wood processing | 1 |