 |
|
level controller : 88 phrases in 18 subjects |
| Architecture | 1 |
| Automated equipment | 5 |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 12 |
| Communications | 1 |
| Drilling | 2 |
| Earth sciences | 2 |
| Electric machinery | 1 |
| Electronics | 3 |
| Metallurgy | 16 |
| Mining | 1 |
| Oil / petroleum | 9 |
| Oil processing plants | 2 |
| Refrigeration | 1 |
| Scientific | 1 |
| Space | 2 |
| Technology | 27 |