 |
| |||
| off-set; step | |||
| cut off rib | |||
| bell; undercut | |||
| redan (fortification); salient (relief); projection | |||
| cove | |||
| keyway; offset | |||
| |||
| spillway; stepped energy destroying; steps; velocity reducing steps | |||
| redan: 6 phrases in 4 subjects |
| Construction | 3 |
| Metallurgy | 1 |
| Natural sciences | 1 |
| Transport | 1 |