 |
| |||
| защита с помощью охранного кольца; кольцевая защита | |||
| защита кольца (oleg.vigodsky) | |||
| ring protection: 32 phrases in 10 subjects |
| Computers | 3 |
| Electronics | 2 |
| Information security and data protection | 1 |
| Mass media | 1 |
| Mathematics | 1 |
| Oil and gas technology | 1 |
| Technology | 5 |
| Telecommunications | 16 |
| Transport | 1 |
| Weapons and gunsmithing | 1 |