 |
| counter tube: 400 phrase in 15 subjects |
| Antennas and waveguides | 1 |
| Biology | 2 |
| Earth sciences | 16 |
| Electronics | 19 |
| General | 1 |
| High energy physics | 15 |
| Measuring instruments | 33 |
| Mechanic engineering | 1 |
| Medical appliances | 2 |
| Mining | 1 |
| Nuclear physics | 41 |
| Physics | 4 |
| Technology | 8 |
| Vacuum tubes | 4 |
| Радиоактивное излучение | 252 |