 |
| |||
| inverted bow and chain girder; truss with curvilinear chords | |||
| crescent truss | |||
| |||
| curved-rib truss | |||
| ферма с криволинейными поясами: 20 phrases in 7 subjects |
| Construction | 11 |
| Electronics | 1 |
| Mechanic engineering | 1 |
| Rail transport | 2 |
| Road works | 1 |
| Seismology | 3 |
| Technology | 1 |