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Refractory : 264 phrases in 21 subjects |
Chemistry | 27 |
Coal | 5 |
Construction | 41 |
Electronics | 2 |
Environment | 6 |
Forestry | 1 |
General | 13 |
Health care | 3 |
Industry | 24 |
Labor law | 2 |
Materials science | 2 |
Mechanic engineering | 4 |
Medical | 3 |
Medical appliances | 3 |
Metallurgy | 46 |
Natural sciences | 1 |
Nuclear physics | 1 |
Politics | 4 |
Radiobiology | 2 |
Technology | 72 |
Textile industry | 2 |