枕木: 176 phrases in 14 subjects |
Agriculture | 7 |
Architecture | 6 |
Bridge construction | 22 |
Construction | 1 |
Economy | 1 |
Electronics | 1 |
Engineering geology | 2 |
General | 4 |
International trade | 1 |
Metallurgy | 2 |
Oil / petroleum | 1 |
Rail transport | 15 |
Technology | 111 |
Textile industry | 2 |