 |
| |||
| helicoidal | |||
|
helical : 115 phrases in 14 subjects |
| Agriculture | 8 |
| Chemistry | 5 |
| Communications | 3 |
| Construction | 3 |
| Earth sciences | 6 |
| Electronics | 13 |
| General | 3 |
| Industry | 6 |
| Mechanic engineering | 40 |
| Medical | 9 |
| Metallurgy | 9 |
| Technology | 1 |
| Transport | 8 |
| Video recording | 1 |