外 推 法 : 48 phrases in 16 subjects |
Air defense | 1 |
Aviation | 1 |
Bridge construction | 3 |
Business | 4 |
Commerce | 1 |
Economy | 1 |
Electronics | 2 |
Engineering geology | 1 |
General | 1 |
Marketing | 1 |
Mathematics | 1 |
Metallurgy | 2 |
Oil / petroleum | 6 |
Space | 6 |
Technology | 15 |
Telecommunications | 2 |