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στρεπτό στοιχείο εφεδράνου κυλίσεως |
pêndulo : 32 phrases in 12 subjects |
Agriculture | 1 |
Chemistry | 2 |
Coal | 2 |
Earth sciences | 2 |
General | 2 |
Life sciences | 2 |
Materials science | 2 |
Mechanic engineering | 4 |
Medical | 4 |
Metallurgy | 2 |
Technology | 2 |
Transport | 7 |