试验研究 : 156 phrases in 32 subjects |
Air defense | 1 |
Aviation | 22 |
Bridge construction | 2 |
Business | 6 |
Chemistry | 3 |
Compressors | 1 |
Dermatology | 1 |
Earth sciences | 24 |
Ecology | 1 |
Economy | 2 |
Electronics | 6 |
Engineering geology | 1 |
Exhibitions | 1 |
Finances | 3 |
General | 11 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Management | 1 |
Metallurgy | 12 |
Mining | 1 |
Name of organization | 3 |
Navigation | 1 |
Nuclear physics | 1 |
Oil / petroleum | 1 |
Oil processing plants | 1 |
Plastics | 4 |
Refrigeration | 1 |
Shipbuilding | 3 |
Space | 16 |
Technology | 21 |
Textile industry | 1 |
United States | 1 |