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| road base | |||
| bearing layer | |||
| base; base course; foundation | |||
| base and sub-base | |||
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| basecourse (Straßenbau); core (Sandwichpanel); roadbase (Straßenbau); basis; bearing bed; bearing course; supporting bed; supporting stratum | |||
| bearing stratum | |||
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| sub-base | |||
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Tragschicht : 23 phrases in 6 subjects |
| Construction | 10 |
| General | 2 |
| Industry | 3 |
| Road works | 2 |
| Technology | 3 |
| Transport | 3 |