进 气 口 : 235 phrases in 18 subjects |
Architecture | 4 |
Automobiles | 64 |
Aviation | 32 |
Compressors | 11 |
Ecology | 1 |
Economy | 3 |
Electronics | 1 |
General | 2 |
Metallurgy | 1 |
Pest control | 2 |
Plastics | 2 |
Racing and motorsport | 1 |
Rail transport | 1 |
Refrigeration | 3 |
Shipbuilding | 13 |
Space | 9 |
Technology | 81 |
Wind Energy | 4 |