三 通 管 : 63 phrases in 20 subjects |
Architecture | 3 |
Automobiles | 5 |
Aviation | 1 |
Chemistry | 2 |
Compressors | 3 |
Construction | 1 |
Drilling | 1 |
Earth sciences | 1 |
Electronics | 2 |
General | 3 |
Hydroelectric power stations | 3 |
Hydrology | 1 |
Metallurgy | 1 |
Nautical | 2 |
Oil / petroleum | 3 |
Plastics | 2 |
Rail transport | 2 |
Shipbuilding | 1 |
Space | 1 |
Technology | 25 |