 |
| |||
| curve-drawing recorder | |||
| curve-drawing recorder | |||
| непрерывный самописец: 15 phrases in 7 subjects |
| Electrical engineering | 3 |
| Electrochemistry | 1 |
| Electronics | 1 |
| Hydraulic engineering | 1 |
| Military | 1 |
| Seismology | 1 |
| Technology | 7 |
|
| |||
| curve-drawing recorder | |||
| curve-drawing recorder | |||
| непрерывный самописец: 15 phrases in 7 subjects |
| Electrical engineering | 3 |
| Electrochemistry | 1 |
| Electronics | 1 |
| Hydraulic engineering | 1 |
| Military | 1 |
| Seismology | 1 |
| Technology | 7 |