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| carapace en béton | |||
| blindage en béton (general concept); protection en béton (general concept); écran en béton (general concept) | |||
| plaque de béton | |||
| concrete shield: 13 phrases in 4 subjects |
| General | 7 |
| Mechanic engineering | 1 |
| Medical | 1 |
| Nuclear physics | 4 |
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