排 气 道 : 74 phrases in 14 subjects |
Automobiles | 12 |
Aviation | 2 |
Compressors | 3 |
Ecology | 1 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 15 |
Oil processing plants | 1 |
Plastics | 3 |
Refrigeration | 4 |
Space | 1 |
Steel production | 1 |
Technology | 25 |