 |
| |||
| spiral system | |||
| спиральная система: 21 phrases in 12 subjects |
| Astronautics | 2 |
| Electrical engineering | 1 |
| Electronics | 2 |
| Makarov | 1 |
| Mass media | 2 |
| Mathematics | 1 |
| Military | 2 |
| Mining | 2 |
| Physics | 1 |
| Public utilities | 1 |
| Technology | 5 |
| Transport | 1 |
|
| |||
| spiral system | |||
| спиральная система: 21 phrases in 12 subjects |
| Astronautics | 2 |
| Electrical engineering | 1 |
| Electronics | 2 |
| Makarov | 1 |
| Mass media | 2 |
| Mathematics | 1 |
| Military | 2 |
| Mining | 2 |
| Physics | 1 |
| Public utilities | 1 |
| Technology | 5 |
| Transport | 1 |