...h)非常小的剩余空隙(apertures)时，那些细小 的微粒可能会被水产生的（resulting)水力拉力(hydraulic drag)带出滤床(filter bed) 5 粒状滤料滤池能够捕获(capture)非常细小的微粒，甚 至在没有（in the absence of)足够大的颗粒在空隙间 架桥(bridge)也是如...
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反冲洗是保持滤床清洁的方法之一。
Backwashing is one of the methods to maintain a filter bed clean.
滤膜在天然滤床渗流井滤净水中具有重要作用。
The filter film plays an important role in water purification in seepaging well with natural filter bed.
氮源对于气相生物滴滤床的净化效果有显著的影响。
The nitrogen source's effects on the purification performance of air phase trickling biofilter are significant.
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