obturateur : 105 phrases in 17 subjects |
Chemistry | 12 |
Cultural studies | 2 |
Earth sciences | 9 |
Electronics | 3 |
Energy industry | 1 |
General | 2 |
Health care | 1 |
Industry | 3 |
Materials science | 7 |
Mechanic engineering | 18 |
Medical | 17 |
Metallurgy | 4 |
Microsoft | 1 |
Natural sciences | 1 |
Oil / petroleum | 2 |
Technology | 1 |
Transport | 21 |