 |
| |||
| block system | |||
| permissive action link system (для предотвращения несанкционированного применения Я О) | |||
| block signalling | |||
| blocking; interlocking system | |||
| блокировочная система: 10 phrases in 4 subjects |
| Automatic control | 2 |
| Military | 4 |
| Technology | 2 |
| Transport | 2 |