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| filter layer; filter material; filtering layer | |||
| filtrating layer | |||
| drainage blanket | |||
| filtration area; counterfort drainage; filter | |||
| filter bed | |||
| filter layer (water treatment); filtering layer (water treatment) | |||
| drainage course; filter course | |||
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| filter sheet | |||
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Filterschicht : 1 短语, 1 学科 |
| 自然资源和野生动物保护 | 1 |