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| rayon delta; rayon δ; delta m; électron secondaire; électron delta; électron δ; particule delta; particule δ; électron de choc; électron percuté; particule percutée | |||
| knock-on: 19 phrases in 5 subjects |
| Earth sciences | 1 |
| Economy | 4 |
| Figurative | 1 |
| Finances | 1 |
| General | 12 |
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