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| Rockwell instrument (для определения твёрдости); Rockwell machine (для определения твёрдости) | |||
| прибор Роквелла: 15 phrases in 12 subjects |
| Automobiles | 1 |
| Drilling | 2 |
| Electrochemistry | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 2 |
| Mining | 2 |
| Oilfields | 1 |
| Pipelines | 1 |
| Polymers | 1 |
| Quality control and standards | 1 |
| Roll stock | 1 |
| Transport | 1 |