 |
|
troughs : 962 phrases in 57 subjects |
| Agriculture | 35 |
| Animal husbandry | 31 |
| Architecture | 13 |
| Automobiles | 12 |
| Aviation | 2 |
| Biology | 3 |
| Bridge construction | 11 |
| Business | 2 |
| Chemistry | 25 |
| Commerce | 1 |
| Construction | 5 |
| Cooking | 2 |
| Desert science | 14 |
| Drilling | 3 |
| Earth sciences | 22 |
| Ecology | 5 |
| Economics | 1 |
| Electronics | 7 |
| Energy industry | 2 |
| Engineering geology | 6 |
| Explosives and Explosive Ordnance Disposal | 6 |
| Finances | 3 |
| Fish farming pisciculture | 2 |
| Fishery fishing industry | 1 |
| General | 4 |
| Geography | 2 |
| Geology | 7 |
| Geotechnics | 1 |
| Hydroelectric power stations | 12 |
| Ichthyology | 1 |
| Law | 2 |
| Mechanic engineering | 2 |
| Metallurgy | 105 |
| Meteorology | 11 |
| Mining | 14 |
| Navigation | 2 |
| Nuclear and fusion power | 1 |
| Oceanography & oceanology | 4 |
| Oil / petroleum | 51 |
| Otorhinolaryngology | 1 |
| Photography | 1 |
| Physics | 1 |
| Plastic surgery | 2 |
| Plastics | 9 |
| Polygraphy | 1 |
| Rail transport | 15 |
| Scientific | 4 |
| Solar power | 2 |
| Space | 4 |
| Sports | 2 |
| Statistics | 2 |
| Table tennis | 1 |
| Technology | 473 |
| Textile industry | 2 |
| Water resources | 2 |
| Wind Energy | 4 |
| Wood processing | 3 |