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| sol de fondation; terrain de fondation; sous-couche f | |||
| plate-forme de la route | |||
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| sous-classe | |||
| fond de forme; infrastructure; terrain; forme; plateforme; sous-fondation | |||
| assiette | |||
| plateforme de la voie; palier de la voie | |||
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| fondation | |||
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subgrade : 19 phrases in 8 subjects |
| Construction | 9 |
| General | 2 |
| Industry | 1 |
| Materials science | 2 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Road works | 1 |
| Transport | 2 |