| |||
reinforcement | |||
enrichment; fortification | |||
strengthening | |||
| |||
fortifications |
fortification : 23 phrases in 10 subjects |
Construction | 3 |
Cultural studies | 1 |
Food service and catering | 2 |
General | 8 |
Industry | 1 |
Medical | 1 |
Metallurgy | 1 |
Patents | 2 |
Technology | 3 |
Transport | 1 |