 |
| |||
| curved top chord (фермы) | |||
| curved top chord (моста) | |||
| curved top chord | |||
| криволинейный верхний пояс: 26 phrases in 9 subjects |
| Construction | 9 |
| Electronics | 1 |
| Mechanic engineering | 1 |
| Military | 1 |
| Rail transport | 6 |
| Road works | 3 |
| Seismology | 3 |
| Technology | 1 |
| Transport | 1 |