indentation hardness : 34 phrases in 14 subjects |
Cement | 2 |
Electronics | 1 |
Geophysics | 1 |
Makarov | 3 |
Metallurgy | 7 |
Metrology | 1 |
Mining | 1 |
Nautical | 2 |
Oil and gas | 1 |
Polymers | 2 |
Quality control and standards | 2 |
Road works | 1 |
Technology | 9 |
Welding | 1 |