周 期 的 : 299 phrases in 50 subjects |
Agriculture | 23 |
Air defense | 1 |
Animal husbandry | 4 |
Architecture | 2 |
Artificial intelligence | 1 |
Athletics | 3 |
Automobiles | 4 |
Aviation | 15 |
Business | 8 |
Commerce | 2 |
Communications | 1 |
Compressors | 1 |
Construction | 2 |
Cryptography | 1 |
Desert science | 1 |
Earth sciences | 2 |
Ecology | 4 |
Economy | 24 |
Electric machinery | 3 |
Electronics | 13 |
Engineering geology | 1 |
Environment | 1 |
Explosives and Explosive Ordnance Disposal | 9 |
Finances | 10 |
Footwear | 1 |
General | 40 |
Horticulture | 1 |
Hydroelectric power stations | 1 |
Information technology | 4 |
International Monetary Fund | 6 |
International trade | 1 |
Librarianship | 1 |
Life sciences | 1 |
Management | 2 |
Materials science | 1 |
Mathematics | 1 |
Metallurgy | 11 |
Nautical | 1 |
Power system protection | 1 |
Project management | 6 |
Refrigeration | 1 |
Reproductive biology | 4 |
Securities | 8 |
Space | 8 |
Sports | 1 |
Statistics | 1 |
Steel production | 1 |
Technology | 53 |
Telecommunications | 3 |
Wind Energy | 4 |