 |
|
signal light : 100 phrase in 18 subjects |
| Automated equipment | 1 |
| Automobiles | 2 |
| Chemistry | 1 |
| Communications | 30 |
| Construction | 4 |
| Economics | 2 |
| Electronics | 7 |
| General | 1 |
| Lighting other than cinema | 1 |
| Nuclear physics | 1 |
| Optics branch of physics | 2 |
| Rail transport | 11 |
| Road works | 1 |
| Technology | 9 |
| Telecommunications | 2 |
| Transport | 22 |
| Vacuum tubes | 1 |
| Weapons and gunsmithing | 2 |