结构试验 : 93 phrases in 15 subjects |
Air defense | 1 |
Automobiles | 3 |
Aviation | 15 |
Bridge construction | 1 |
Electronics | 6 |
Engineering geology | 1 |
General | 1 |
Hydroelectric power stations | 1 |
Information technology | 1 |
Navigation | 2 |
Plastics | 2 |
Shipbuilding | 8 |
Space | 30 |
Technology | 20 |
Wind Energy | 1 |