retardador : 52 phrases in 16 subjects |
Agriculture | 3 |
Chemistry | 9 |
Coal | 1 |
Commerce | 1 |
Construction | 2 |
Earth sciences | 5 |
Electronics | 3 |
Environment | 1 |
General | 3 |
Industry | 5 |
Isolation | 2 |
Materials science | 1 |
Mechanic engineering | 2 |
Metallurgy | 1 |
Natural sciences | 2 |
Transport | 11 |