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intervalle de temps : 50 phrases in 14 subjects |
Chemistry | 1 |
Communications | 15 |
Earth sciences | 1 |
Electronics | 12 |
Industry | 1 |
Measuring instruments | 2 |
Medical appliances | 1 |
Metallurgy | 2 |
Power lines | 2 |
Sound recording | 1 |
Statistics | 1 |
Technology | 3 |
Telecommunications | 2 |
Transport | 6 |