废水渗入滤垫中，使得废水能流过粘着在过滤材料的有机微生物。
The wastewater is spread over the filter, allowing it to flow past the film of micro-organisms fixed to the filter material.
废水渗入滤垫中，使得废水能流过粘着在过滤材料的有机微生物。
The wastewater is spread over the filter, allowing it to flow past the film of micro-organisms fixed to the filter material.
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