single-pole double-throw : 23 phrases in 14 subjects |
Automobiles | 1 |
Aviation | 1 |
Earth sciences | 2 |
Electricity | 1 |
Electronics | 2 |
Geophysics | 1 |
Hydroelectric power stations | 1 |
Information technology | 1 |
Navigation | 1 |
Nuclear and fusion power | 1 |
Oil / petroleum | 1 |
Shipbuilding | 1 |
Space | 4 |
Technology | 5 |