 |
| reference voltage: 68 phrases in 19 subjects |
| Automated equipment | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Communications | 1 |
| Computers | 3 |
| Electrical engineering | 3 |
| Electricity | 1 |
| Electronics | 4 |
| Geophysics | 2 |
| High frequency electronics | 1 |
| Household appliances | 1 |
| Information technology | 1 |
| Mechanics | 1 |
| Metrology | 4 |
| Microelectronics | 7 |
| Military | 2 |
| Physics | 5 |
| Technology | 24 |
| Telecommunications | 4 |