 |
| |||
| hemispherical head (цилиндров) | |||
| snap (болта, заклёпки) | |||
| button head; round head | |||
| snap (болта или заклёпки); cup head | |||
| полусферическая головка: 17 phrases in 7 subjects |
| Astronautics | 1 |
| Construction | 3 |
| Forestry | 1 |
| Mechanic engineering | 4 |
| Nautical | 2 |
| Road works | 1 |
| Technology | 5 |