 |
| electric lamps: 18 phrases in 9 subjects |
| Analytical chemistry | 1 |
| Communications | 1 |
| Electronics | 4 |
| Finances | 1 |
| General | 1 |
| Industry | 1 |
| Metallurgy | 3 |
| Mining | 5 |
| Technology | 1 |
|
| electric lamps: 18 phrases in 9 subjects |
| Analytical chemistry | 1 |
| Communications | 1 |
| Electronics | 4 |
| Finances | 1 |
| General | 1 |
| Industry | 1 |
| Metallurgy | 3 |
| Mining | 5 |
| Technology | 1 |