N定M的刻 : 25 phrases in 13 subjects |
Air defense | 1 |
Architecture | 2 |
Chemistry | 3 |
Electronics | 4 |
Information technology | 2 |
International trade | 1 |
Metallurgy | 2 |
Nautical | 1 |
Perfume | 4 |
Reliability | 1 |
Securities | 1 |
Telecommunications | 2 |
United Nations | 1 |