复 合结构 : 53 phrases in 21 subjects |
Agriculture | 1 |
Automobiles | 1 |
Aviation | 6 |
Bridge construction | 1 |
Chemistry | 1 |
Ecology | 2 |
Economy | 1 |
Electronics | 2 |
Information technology | 1 |
Nautical | 1 |
Navigation | 1 |
Oil / petroleum | 1 |
Plastics | 4 |
Polymers | 2 |
Rail transport | 1 |
Securities | 1 |
Space | 9 |
Technology | 11 |
Textile industry | 2 |
United States | 1 |
Wind Energy | 3 |