S-3: 27 phrases in 20 subjects |
Agriculture | 1 |
Aviation | 1 |
Bridge construction | 1 |
Chemistry | 3 |
China | 1 |
Ecology | 1 |
Economy | 1 |
General | 1 |
Horticulture | 1 |
Information technology | 1 |
Metallurgy | 1 |
Nautical | 1 |
Perfume | 1 |
Plastics | 1 |
Securities | 2 |
Shooting sport | 3 |
Space | 1 |
Sports | 3 |
Technology | 1 |
United States | 1 |