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| couche filtrante | |||
| médias filtrants | |||
| matériau précriblé | |||
| matière filtrante; matériau filtrant | |||
| masse filtrante; matériau du filtre | |||
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filter material : 6 phrases in 4 subjects |
| Chemistry | 1 |
| Construction | 2 |
| Earth sciences | 1 |
| Natural resourses and wildlife conservation | 2 |