 |
| 覆盖: 2401 phrase in 83 subjects |
| Advertising | 21 |
| Agriculture | 152 |
| Air defense | 22 |
| Animal husbandry | 23 |
| Architecture | 33 |
| Artificial intelligence | 3 |
| Automobiles | 46 |
| Aviation | 39 |
| Biotechnology | 2 |
| Bridge construction | 21 |
| Business | 14 |
| Chemistry | 7 |
| China | 1 |
| Climatology | 2 |
| Commerce | 3 |
| Communications | 3 |
| Compressors | 1 |
| Computer networks | 8 |
| Computers | 1 |
| Construction | 3 |
| Cryptography | 2 |
| Dermatology | 4 |
| Desert science | 55 |
| Drilling | 11 |
| Earth sciences | 28 |
| Ecology | 46 |
| Economy | 10 |
| Electric machinery | 6 |
| Electronics | 146 |
| Engineering geology | 42 |
| Environment | 4 |
| Exhibitions | 2 |
| Explosives and Explosive Ordnance Disposal | 34 |
| Figure skating | 1 |
| Finances | 6 |
| Food service and catering | 1 |
| Footwear | 1 |
| Forestry | 28 |
| General | 167 |
| Geology | 7 |
| Geophysics | 7 |
| Golf | 1 |
| Horticulture | 1 |
| Hydraulics | 1 |
| Hydroelectric power stations | 55 |
| Information technology | 25 |
| Insurance | 1 |
| Librarianship | 3 |
| Life sciences | 4 |
| Metallurgy | 57 |
| Meteorology | 1 |
| Military | 1 |
| Multimedia | 3 |
| Name of organization | 2 |
| Nautical | 5 |
| Nursing | 3 |
| Oil / petroleum | 114 |
| Oil processing plants | 1 |
| Plastic surgery | 4 |
| Plastics | 29 |
| Polygraphy | 2 |
| Project management | 3 |
| Rail transport | 8 |
| Reliability | 2 |
| Remote sensing | 7 |
| Securities | 2 |
| Semiconductors | 1 |
| Shipbuilding | 7 |
| Soil science | 9 |
| Solar power | 1 |
| Space | 102 |
| Sports | 5 |
| Statistics | 4 |
| Table tennis | 1 |
| Technology | 815 |
| Telecommunications | 38 |
| Textile industry | 50 |
| Transport | 1 |
| United Nations | 9 |
| United States | 1 |
| Veterinary medicine | 1 |
| Water resources | 3 |
| Wind Energy | 5 |