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forer a grande profondeur | |||
forage à grande profondeur | |||
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forage à grande profondeur | |||
forage de grande profondeur; forage profond |
deep-drilling : 7 phrases in 5 subjects |
Energy industry | 1 |
Metallurgy | 3 |
Natural sciences | 1 |
Technology | 1 |
United Nations | 1 |