|
guard ring : 10 phrases in 5 subjects |
| Communications | 4 |
| Electronics | 3 |
| Mechanic engineering | 1 |
| Nuclear physics | 1 |
| Technology | 1 |
|
guard ring : 10 phrases in 5 subjects |
| Communications | 4 |
| Electronics | 3 |
| Mechanic engineering | 1 |
| Nuclear physics | 1 |
| Technology | 1 |