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control lines : 171 phrases in 32 subjects |
| Air defense | 1 |
| Automated equipment | 1 |
| Automobiles | 1 |
| Aviation | 13 |
| Business | 5 |
| Chemistry | 2 |
| Communications | 1 |
| Computers | 1 |
| Desert science | 1 |
| Drilling | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Electric machinery | 2 |
| Electronics | 41 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Geophysics | 4 |
| Information technology | 14 |
| Management | 4 |
| Mathematics | 1 |
| Mechanics | 1 |
| Metallurgy | 4 |
| Mining | 2 |
| Nautical | 1 |
| Nuclear and fusion power | 2 |
| Oil / petroleum | 8 |
| Skydiving | 1 |
| Space | 7 |
| Statistics | 1 |
| Technology | 38 |
| Telecommunications | 5 |
| Textile industry | 3 |
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