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refractory: 96 phrases in 15 subjects |
Chemistry | 24 |
Coal | 3 |
Construction | 2 |
Electronics | 3 |
Environment | 4 |
General | 4 |
Industry | 24 |
Materials science | 1 |
Mechanic engineering | 3 |
Medical | 4 |
Metallurgy | 15 |
Natural sciences | 1 |
Politics | 3 |
Technology | 3 |
Textile industry | 2 |