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protection : 2245 phrases in 81 subjects |
| Agriculture | 59 |
| Animal husbandry | 1 |
| Antennas and waveguides | 1 |
| Art | 9 |
| Banking | 1 |
| Cables and cable production | 1 |
| Chemistry | 16 |
| Coal | 1 |
| Commerce | 9 |
| Communications | 34 |
| Construction | 23 |
| Criminal law | 5 |
| Cultural studies | 3 |
| Earth sciences | 24 |
| Ecology | 1 |
| Economy | 48 |
| Education | 3 |
| Electric machinery | 20 |
| Electric traction | 2 |
| Electrical engineering | 4 |
| Electricity generation | 8 |
| Electronics | 234 |
| Energy industry | 4 |
| Environment | 360 |
| Finances | 37 |
| Fish farming pisciculture | 8 |
| Food industry | 2 |
| Forestry | 31 |
| General | 216 |
| Health care | 63 |
| Hobbies and pastimes | 4 |
| Human rights activism | 22 |
| Immigration and citizenship | 16 |
| Industry | 36 |
| Information technology | 106 |
| Insurance | 5 |
| International law | 1 |
| International Monetary Fund | 22 |
| Isolation | 11 |
| Labor law | 60 |
| Law | 206 |
| Life sciences | 24 |
| Lighting other than cinema | 2 |
| Marketing | 6 |
| Materials science | 11 |
| Mathematics | 6 |
| Mechanic engineering | 47 |
| Medical | 38 |
| Metallurgy | 24 |
| Microsoft | 65 |
| Municipal planning | 5 |
| Name of organization | 1 |
| Natural resourses and wildlife conservation | 5 |
| Natural sciences | 18 |
| Nuclear physics | 5 |
| Obsolete / dated | 11 |
| Patents | 24 |
| Pharmacy and pharmacology | 1 |
| Politics | 20 |
| Power lines | 3 |
| Procedural law | 6 |
| Radio | 15 |
| Radiology | 5 |
| Rail transport | 7 |
| Research and development | 2 |
| Risk Management | 2 |
| Social science | 23 |
| Sociology | 5 |
| Statistics | 9 |
| Superconductivity | 1 |
| Technology | 6 |
| Telegraphy | 1 |
| Thermal Energy | 1 |
| Trade unions | 12 |
| Transformers | 3 |
| Transport | 103 |
| United Nations | 4 |
| Vacuum tubes | 1 |
| Welding | 2 |
| Wind Energy | 1 |
| Work flow | 3 |
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