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| unité principale (The measurement used to define the most commonly sold unit of a product) | |||
| unité primaire | |||
| unité d'échantillonnage du premier degré; unité de sondage du premier degré | |||
| primary unit: 9 phrases in 3 subjects |
| Chemistry | 1 |
| General | 1 |
| Statistics | 7 |