有效范 围 : 30 phrases in 17 subjects |
Agriculture | 2 |
Automobiles | 1 |
Aviation | 1 |
Business | 1 |
Chemistry | 2 |
Commerce | 1 |
Earth sciences | 1 |
Electronics | 2 |
General | 2 |
Metallurgy | 1 |
Otorhinolaryngology | 1 |
Project management | 1 |
Rail transport | 1 |
Securities | 1 |
Space | 3 |
Technology | 8 |
Transport | 1 |