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нижний слой; подслой; подложка; подпочва |
下层地层 : 60 phrases in 12 subjects |
Construction | 1 |
Drilling | 1 |
Ecology | 1 |
Electronics | 5 |
General | 15 |
Geology | 16 |
Oil / petroleum | 5 |
Oil processing plants | 1 |
Oilfields | 6 |
Technology | 6 |
Water resources | 2 |
Wood processing | 1 |