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en circuit fermé |
по замкнутому циклу: 15 phrases in 10 subjects |
Automated equipment | 1 |
Aviation | 2 |
Chemistry | 1 |
Computers | 1 |
Electronics | 1 |
Food industry | 2 |
Forestry | 1 |
Hydraulic engineering | 2 |
Natural resourses and wildlife conservation | 1 |
Technology | 3 |